DTC Alfa Romeo Diagnostic Trouble Codes List – OBD2 Manufacturer Specific Codes

Embarking on the complexities of Alfa Romeo vehicles and their diagnostic intricacies? Look no further. In this post, we’ll delve into an extensive list of Diagnostic Trouble Codes (DTCs) specific to Alfa Romeo automobiles.


DTC Manufacturer Specific Codes

DTC Alfa Romeo, OBD2 Powertrain Diagnostic Trouble Codes List:

DTC P1120 Throttle valve control unit short to earth
DTC P1120 Throttle valve control unit open circuit
DTC P1120 Throttle valve control unit short to B+
DTC P1120 Throttle valve control unit Plausibility error
DTC P1172 Lambda adaptat. 2 (additive) above upper limit
DTC P1172 Lambda adaptat. 2 (additive) below lower limit
DTC P1173 Lambda adaptat. 1 (multiplicative) above upper limit
DTC P1173 Lambda adaptat. 1 (multiplicative) below lower limit
DTC P1325 Control unit knock control module malfunction
DTC P1331 Air conditioner compressor relay Plausibility error
DTC P1511 Idle actuator, throttle plate potentiometer short to earth
DTC P1511 Idle actuator, throttle plate potentiometer open circuit/positive short
DTC P1512 Idle control: regulation range not in range
DTC P1512 Idle control: regulation range at maximum stop
DTC P1512 Idle control: regulation range at minimum stop
DTC P1513 Idle actuator circuit short to earth
DTC P1513 Idle actuator circuit open circuit
DTC P1513 Idle actuator circuit short to B+
DTC P1531 Air conditioner compressor relay short to earth
DTC P1531 Air conditioner compressor relay open circuit
DTC P1531 Air conditioner compressor relay short to B+
DTC P1555 Stop-lamp switch short to earth
DTC P1555 Stop-lamp switch open circuit
DTC P1555 Stop-lamp switch short to B+
DTC P1555 Stop-lamp switch Plausibility error
DTC P1565 Operating lever, cruise control short to earth
DTC P1565 Operating lever, cruise control short to B+
DTC P1565 Operating lever, cruise control no signal
DTC P1653 Camshaft timing control short to earth
DTC P1653 Camshaft timing control open circuit
DTC P1653 Camshaft timing control short to B+
DTC P1654 Intake-manifold change-over short to earth
DTC P1654 Intake-manifold change-over open circuit
DTC P1654 Intake-manifold change-over short to B+
DTC P1690 Safety fuel-shut-off device no function
DTC P1690 Safety fuel-shut-off device Plausibility error
DTC P1690 Safety fuel-shut-off device Function active

DTC Alfa Romeo, OBD2 Body/AC/Airbag Diagnostic Trouble Codes List:

DTC B1200 Climate Control Pushbutton Circuit Failure
DTC B1201 Fuel Sender Circuit Failure
DTC B1202 Fuel Sender Circuit Open
DTC B1203 Fuel Sender Circuit Short To Battery
DTC B1204 Fuel Sender Circuit Short To Ground
DTC B1205 EIC Switch-1 Assembly Circuit Failure
DTC B1206 EIC Switch-1 Assembly Circuit Open
DTC B1207 EIC Switch-1 Assembly Circuit Short To Battery
DTC B1208 EIC Switch-1 Assembly Circuit Short To Ground
DTC B1209 EIC Switch-2 Assembly Circuit Failure
DTC B1210 EIC Switch-2 Assembly Circuit Open
DTC B1211 EIC Switch-2 Assembly Circuit Short To Battery
DTC B1212 EIC Switch-2 Assembly Circuit Short To Ground
DTC B1213 Anti-Theft Number of Programmed Keys Is Below Minimum
DTC B1214 Running Board Lamp Circuit Failure
DTC B1215 Running Board Lamp Circuit Short to Battery
DTC B1216 Emergency & Road Side Assistance Switch Circuit Short to Ground
DTC B1217 Horn Relay Coil Circuit Failure
DTC B1218 Horn Relay Coil Circuit Short to Vbatt
DTC B1219 Fuel Tank Pressure Sensor Circuit Failure
DTC B1220 Fuel Tank Pressure Sensor Circuit Open
DTC B1222 Fuel Temperature Sensor #1 Circuit Failure
DTC B1223 Fuel Temperature Sensor #1 Circuit Open
DTC B1224 Fuel Temperature Sensor #1 Circuit Short to Battery
DTC B1225 Fuel Temperature Sensor #1 Circuit Short to Ground
DTC B1226 Fuel Temperature Sensor #2 Circuit Failure
DTC B1227 Fuel Temperature Sensor #2 Circuit Open
DTC B1228 Fuel Temperature Sensor #2 Circuit Short to Battery
DTC B1229 Fuel Temperature Sensor #2 Circuit Short to Ground
DTC B1231 Longitudinal Acceleration Threshold Exceeded
DTC B1232 DO NOT USE (See Shop Manual for Description)
DTC B1233 Glass Break Sensor Failure
DTC B1234 Mirror Switch Invalid Code
DTC B1235 Window Feedback Failure
DTC B1236 Window Feedback Loss of Signal
DTC B1237 Window Feedback Out of Range
DTC B1238 Over Temperature Fault
DTC B1239 Air Flow Blend Door Driver Circuit Failure
DTC B1240 Wiper Washer Rear Pump Relay Circuit Failure
DTC B1241 Wiper Washer Rear Pump Relay Circuit Short to Battery
DTC B1242 Air Flow Recirculation Door Driver Circuit Failure
DTC B1243 Express Window Down Switch Circuit Short to Battery
DTC B1244 Wiper Rear Motor Run Relay Circuit Failure
DTC B1245 Wiper Rear Motor Run Relay Circuit Short to Battery
DTC B1246 Dim Panel Potentiometer Switch Circuit Failure
DTC B1247 Panel Dim Switch Circuit Open
DTC B1248 Passenger’s Seatback Autoglide Rearward Switch Circuit Short to Ground
DTC B1249 Blend Door Failure
DTC B1250 Air Temperature Internal Sensor Circuit Failure
DTC B1251 Air Temperature Internal Sensor Circuit Open
DTC B1252 Air Temperature Internal Sensor Circuit Short To Battery
DTC B1253 Air Temperature Internal Sensor Circuit Short To Ground
DTC B1254 Air Temperature External Sensor Circuit Failure
DTC B1255 Air Temperature External Sensor Circuit Open
DTC B1256 Air Temperature External Sensor Circuit Short To Battery
DTC B1257 Air Temperature External Sensor Circuit Short To Ground
DTC B1258 Solar Radiation Sensor Circuit Failure
DTC B1259 Solar Radiation Sensor Circuit Open
DTC B1260 Solar Radiation Sensor Circuit Short To Battery
DTC B1261 Solar Radiation Sensor Circuit Short To Ground
DTC B1262 Servo Motor Defrost Circuit Failure
DTC B1263 Servo Motor Vent Circuit Failure
DTC B1264 Servo Motor Foot Circuit Failure
DTC B1265 Servo Motor Coolair Bypass Circuit Failure
DTC B1266 Servo Motor Airintake Left Circuit Failure
DTC B1267 Servo Motor Airintake Right Circuit Failure
DTC B1268 Servo Motor Potentiometer Defrost Circuit Failure
DTC B1269 Servo Motor Potentiometer Defrost Circuit Open
DTC B1270 Servo Motor Potentiometer Defrost Circuit Short To Battery
DTC B1271 Servo Motor Potentiometer Defrost Circuit Short To Ground
DTC B1272 Servo Motor Potentiometer Vent Circuit Failure
DTC B1273 Servo Motor Potentiometer Vent Circuit Open
DTC B1274 Servo Motor Potentiometer Vent Circuit Short To Battery
DTC B1275 Servo Motor Potentiometer Vent Circuit Short To Ground
DTC B1276 Servo Motor Potentiometer Foot Circuit Failure
DTC B1277 Servo Motor Potentiometer Foot Circuit Open
DTC B1278 Servo Motor Potentiometer Foot Circuit Short To Battery
DTC B1279 Servo Motor Potentiometer Foot Circuit Short To Ground
DTC B1280 Servo Motor Potentiometer Coolair Circuit Failure
DTC B1281 Servo Motor Potentiometer Coolair Circuit Open
DTC B1282 Servo Motor Potentiometer Coolair Circuit Short To Battery
DTC B1283 Servo Motor Potentiometer Coolair Circuit Short To Ground
DTC B1284 Servo Motor Potentiometer Airintake Left Circuit Failure
DTC B1285 Servo Motor Potentiometer Airintake Left Circuit Open
DTC B1286 Servo Motor Potentiometer Airintake Left Circuit Short To Battery
DTC B1287 Servo Motor Potentiometer Airintake Left Circuit Short To Ground
DTC B1288 Servo Motor Potentiometer Airintake Right Circuit Failure
DTC B1289 Servo Motor Potentiometer Airintake Right Circuit Open
DTC B1290 Servo Motor Potentiometer Airintake Right Circuit Short To Battery
DTC B1291 Servo Motor Potentiometer Airintake Right Circuit Short To Ground
DTC B1292 Battery Power Relay Circuit Failure
DTC B1293 Battery Power Relay Circuit Open
DTC B1294 Battery Power Relay Circuit Short To Battery
DTC B1295 Battery Power Relay Circuit Short To Ground
DTC B1296 Power Supply Sensor Circuit Failure
DTC B1297 Power Supply Sensor Circuit Open
DTC B1298 Power Supply Sensor Circuit Short To Battery
DTC B1299 Power Supply Sensor Circuit Short To Ground
DTC B1300 Power Door Lock Circuit Failure
DTC B1301 Power Door Lock Circuit Open
DTC B1302 Accessory Delay Relay Coil Circuit Failure
DTC B1303 Accessory Delay Relay Coil Circuit Open
DTC B1304 Accessory Delay Relay Coil Circuit Short To Battery
DTC B1305 Accessory Delay Relay Coil Circuit Short To Ground
DTC B1306 Oil Level Switch Circuit Open
DTC B1307 Oil Level Switch Circuit Short To Battery
DTC B1308 Oil Level Switch Circuit Short To Ground
DTC B1309 Power Door Lock Circuit Short To Ground
DTC B1310 Power Door Unlock Circuit Failure
DTC B1311 Power Door Unlock Circuit Open
DTC B1312 Lamp Headlamp Input Circuit Short To Battery
DTC B1313 Battery Saver Relay Coil Circuit Failure
DTC B1314 Battery Saver Relay Coil Circuit Open
DTC B1315 Battery Saver Relay Coil Circuit Short To Battery
DTC B1316 Battery Saver Relay Coil Circuit Short To Ground
DTC B1317 Battery Voltage High
DTC B1318 Battery Voltage Low
DTC B1319 Driver Door Ajar Circuit Failure
DTC B1320 Driver Door Ajar Circuit Open
DTC B1321 Driver Door Ajar Circuit Short To Battery
DTC B1322 Driver Door Ajar Circuit Short To Ground
DTC B1323 Door Ajar Lamp Circuit Failure
DTC B1324 Door Ajar Lamp Circuit Open
DTC B1325 Door Ajar Lamp Circuit Short To Battery
DTC B1326 Door Ajar Lamp Circuit Short To Ground
DTC B1327 Passenger Door Ajar Circuit Failure
DTC B1328 Passenger Door Ajar Circuit Open
DTC B1329 Passenger Door Ajar Circuit Short To Battery
DTC B1330 Passenger Door Ajar Circuit Short To Ground
DTC B1331 Decklid Ajar Rear Door Circuit Failure
DTC B1332 Decklid Ajar Rear Door Circuit Open
DTC B1333 Decklid Ajar Rear Door Circuit Short To Battery
DTC B1334 Decklid Ajar Rear Door Circuit Short To Ground
DTC B1335 Door Ajar RR Circuit Failure
DTC B1336 Door Ajar RR Circuit Open
DTC B1337 Door Ajar RR Circuit Short To Battery
DTC B1338 Door Ajar RR Circuit Short To Ground
DTC B1339 Chime Input Request Circuit Short To Battery
DTC B1340 Chime Input Request Circuit Short To Ground
DTC B1341 Power Door Unlock Circuit Short To Ground
DTC B1342 ECU Is Defective
DTC B1343 Heated Backlite Input Circuit Failure
DTC B1344 Heated Backlite Input Circuit Open
DTC B1345 Heated Backlite Input Circuit Short To Ground
DTC B1346 Heated Backlite Input Circuit Short To Battery
DTC B1347 Heated Backlite Relay Circuit Failure
DTC B1348 Heated Backlite Relay Circuit Open
DTC B1349 Heated Backlite Relay Short To Battery
DTC B1350 Heated Backlite Relay Short To Ground
DTC B1351 Ignition Key-In Circuit Short To Battery
DTC B1352 Ignition Key-In Circuit Failure
DTC B1353 Ignition Key-In Circuit Open
DTC B1354 Ignition Key-In Circuit Short To Ground
DTC B1355 Ignition Run Circuit Failure
DTC B1356 Ignition Run Circuit Open
DTC B1357 Ignition Run Circuit Short To Battery
DTC B1358 Ignition Run Circuit Short To Ground
DTC B1359 Ignition Run/Acc Circuit Failure
DTC B1360 Ignition Run/Acc Circuit Open
DTC B1361 Ignition Run/Acc Circuit Short To Battery
DTC B1362 Ignition Run/Acc Circuit Short To Ground
DTC B1363 Ignition Start Circuit Failure
DTC B1364 Ignition Start Circuit Open
DTC B1365 Ignition Start Circuit Short To Battery
DTC B1366 Ignition Start Circuit Short To Ground
DTC B1367 Ignition Tach Circuit Failure
DTC B1368 Ignition Tach Circuit Open
DTC B1369 Ignition Tach Circuit Short To Battery
DTC B1370 Ignition Tach Circuit Short To Ground
DTC B1371 Illuminated Entry Relay Circuit Failure
DTC B1372 Illuminated Entry Relay Circuit Open
DTC B1373 Illuminated Entry Relay Short To Battery
DTC B1374 Illuminated Entry Relay Short To Ground
DTC B1375 Oil Change Lamp Circuit Open
DTC B1376 Oil Change Lamp Circuit Short To Battery
DTC B1377 Oil Change Lamp Circuit Failure
DTC B1378 Oil Change Lamp Circuit Short To Ground
DTC B1379 Oil Change Reset Button Circuit Short To Ground
DTC B1380 Oil Change Reset Button Circuit Failure
DTC B1381 Oil Change Reset Button Circuit Open
DTC B1382 Oil Change Reset Button Circuit Short To Battery
DTC B1383 Oil Level Lamp Circuit Short To Battery
DTC B1384 Oil Level Lamp Circuit Failure
DTC B1385 Oil Level Lamp Circuit Open
DTC B1386 Oil Level Lamp Circuit Short To Ground
DTC B1387 Oil Temperature Sensor Circuit Open
DTC B1388 Oil Temperature Sensor Circuit Short To Battery
DTC B1389 Oil Temperature Sensor Circuit Failure
DTC B1390 Oil Temperature Sensor Circuit Short To Ground
DTC B1391 Oil Level Switch Circuit Failure
DTC B1392 Power Door Memory Lock Relay Circuit Failure
DTC B1393 Power Door Memory Lock Relay Circuit Open
DTC B1394 Power Door Memory Lock Relay Circuit Short To Battery
DTC B1395 Power Door Memory Lock Relay Circuit Short To Ground
DTC B1396 Power Door Lock Circuit Short To Battery
DTC B1397 Power Door Unlock Circuit Short To Battery
DTC B1398 Driver Power Window One Touch Window Relay Circuit Failure
DTC B1399 Driver Power Window One Touch Window Relay Circuit Open
DTC B1400 Driver Power Window One Touch Window Relay Circuit Short To Battery
DTC B1401 Driver Power Window One Touch Window Relay Circuit Short To Ground
DTC B1402 Driver Power Window Down Switch Circuit Failure
DTC B1403 Driver Power Window Up Switch Circuit Failure
DTC B1404 Driver Power Window Down Circuit Open
DTC B1405 Driver Power Window Down Circuit Short To Battery
DTC B1406 Driver Power Window Down Circuit Short To Ground
DTC B1407 Driver Power Window Up Circuit Open
DTC B1408 Driver Power Window Up Circuit Short To Battery
DTC B1409 Driver Power Window Up Circuit Short To Ground
DTC B1410 Driver Power Window Motor Circuit Failure
DTC B1411 Driver Power Window Motor Circuit Open
DTC B1412 Driver Power Window Motor Circuit Short To Battery
DTC B1413 Driver Power Window Motor Circuit Short To Ground
DTC B1414 Power Window LR Motor Circuit Failure
DTC B1415 Power Window LR Motor Circuit Open
DTC B1416 Power Window LR Motor Circuit Short To Battery
DTC B1417 Power Window LR Motor Circuit Short To Ground
DTC B1418 Passenger Power Window Motor Circuit Failure
DTC B1419 Passenger Power Window Motor Circuit Open
DTC B1420 Passenger Power Window Motor Circuit Short To Battery
DTC B1421 Passenger Power Window Motor Circuit Short To Ground
DTC B1422 Power Window RR Motor Circuit Failure
DTC B1423 Power Window RR Motor Circuit Open
DTC B1424 Power Window RR Motor Circuit Short To Battery
DTC B1425 Power Window RR Motor Circuit Short To Ground
DTC B1426 Lamp Seat Belt Circuit Short To Battery
DTC B1427 Lamp Seat Belt Circuit Open
DTC B1428 Lamp Seat Belt Circuit Failure
DTC B1429 Lamp Seat Belt Circuit Short To Ground
DTC B1430 Seat Belt Switch Circuit Short To Ground
DTC B1431 Wiper Brake/Run Relay Circuit Failure
DTC B1432 Wiper Brake/Run Relay Circuit Short To Battery
DTC B1433 Wiper Brake/Run Relay Circuit Short To Ground
DTC B1434 Wiper Hi/Low Speed Relay Coil Circuit Failure
DTC B1435 Wiper Hi/Low Speed Relay Coil Circuit Open
DTC B1436 Wiper Hi/Low Speed Relay Coil Circuit Short To Battery
DTC B1437 Wiper Hi/Low Speed Relay Coil Circuit Short To Ground
DTC B1438 Wiper Mode Select Switch Circuit Failure
DTC B1439 Wiper Mode Select Switch Circuit Open
DTC B1440 Wiper Mode Select Switch Circuit Short To Battery
DTC B1441 Wiper Mode Select Switch Circuit Short To Ground
DTC B1442 Door Handle Switch Circuit Failure
DTC B1443 Door Handle Switch Circuit Open
DTC B1444 Door Handle Switch Circuit Short To Battery
DTC B1445 Door Handle Switch Circuit Short To Ground
DTC B1446 Wiper Park Sense Circuit Failure
DTC B1447 Wiper Park Sense Circuit Open
DTC B1448 Wiper Park Sense Circuit Short To Battery
DTC B1449 Wiper Park Sense Circuit Short To Ground
DTC B1450 Wiper Wash/Delay Switch Circuit Failure
DTC B1451 Wiper Wash/Delay Switch Circuit Open
DTC B1452 Wiper Wash/Delay Switch Circuit Short To Battery
DTC B1453 Wiper Wash/Delay Switch Circuit Short To Ground
DTC B1454 Wiper Washer Fluid Lamp Circuit Failure
DTC B1455 Wiper Washer Fluid Lamp Circuit Open
DTC B1456 Wiper Washer Fluid Lamp Circuit Short To Battery
DTC B1457 Wiper Washer Fluid Lamp Circuit Short To Ground
DTC B1458 Wiper Washer Pump Motor Relay Circuit Failure
DTC B1459 Wiper Washer Pump Motor Relay Coil Circuit Open
DTC B1460 Wiper Washer Pump Motor Relay Coil Circuit Short To Battery
DTC B1461 Wiper Washer Pump Motor Relay Coil Circuit Short To Ground
DTC B1462 Seat Belt Switch Circuit Failure
DTC B1463 Seat Belt Switch Circuit Open
DTC B1464 Seat Belt Switch Circuit Short To Battery
DTC B1465 Wiper Brake/Run Relay Circuit Open
DTC B1466 Wiper Hi/Low Speed Not Switching
DTC B1467 Wiper Hi/Low Speed Circuit Motor Short To Battery
DTC B1468 Chime Input Request Circuit Failure
DTC B1469 Chime Input Request Circuit Open
DTC B1470 Lamp Headlamp Input Circuit Failure
DTC B1471 Lamp Headlamp Input Circuit Open
DTC B1472 Lamp Headlamp Input Circuit Short To Ground
DTC B1473 Wiper Low Speed Circuit Motor Failure
DTC B1474 Battery Saver Power Relay Circuit Short To Battery
DTC B1475 Accessory Delay Relay Contact Short To Battery
DTC B1476 Wiper High Speed Circuit Motor Failure
DTC B1477 Wiper Hi/Low Circuit Motor Short To Ground
DTC B1478 Power Window One Touch Up/Down Activated Simultaneously
DTC B1479 Wiper Washer Fluid Level Sensor Circuit Failure
DTC B1480 Wiper Washer Fluid Level Sensor Circuit Open
DTC B1481 Wiper Washer Fluid Level Sensor Circuit Short To Battery
DTC B1482 Wiper Washer Fluid Level Sensor Circuit Short To Ground
DTC B1483 Brake Pedal Input Circuit Failure
DTC B1484 Brake Pedal Input Open Circuit
DTC B1485 Brake Pedal Input Circuit Battery Short
DTC B1486 Brake Pedal Input Circuit Ground Short
DTC B1487 Door Handle Right Front Circuit Failure
DTC B1488 Door Handle Right Front Circuit Open
DTC B1489 Door Handle Right Front Short To Battery
DTC B1490 Door Handle Right Front Short To Ground
DTC B1491 Ignition Cylinder Sensor Circuit Failure
DTC B1492 Ignition Cylinder Sensor Open Circuit
DTC B1493 Ignition Cylinder Sensor Battery Short
DTC B1494 Ignition Cylinder Sensor Ground Short
DTC B1495 Decklid Punch-Out Sensor Circuit Failure
DTC B1496 Decklid Punch-Out Sensor Open Circuit
DTC B1497 Decklid Punch-Out Sensor Battery Short
DTC B1498 Decklid Punch-Out Sensor Ground Short
DTC B1499 Lamp Turn Signal Left Circuit Failure
DTC B1500 Lamp Turn Signal Left Circuit Open
DTC B1501 Lamp Turn Signal Left Circuit Short To Battery
DTC B1502 Lamp Turn Signal Left Circuit Short To Ground
DTC B1503 Lamp Turn Signal Right Circuit Failure
DTC B1504 Lamp Turn Signal Right Circuit Open
DTC B1505 Lamp Turn Signal Right Circuit Short To Battery
DTC B1506 Lamp Turn Signal Right Circuit Short To Ground
DTC B1507 Flash To Pass Switch Circuit Failure
DTC B1508 Flash To Pass Switch Circuit Open
DTC B1509 Flash To Pass Switch Circuit Short To Battery
DTC B1510 Flash To Pass Switch Circuit Short To Ground
DTC B1511 Driver Door Handle Circuit Failure
DTC B1512 Driver Door Handle Circuit Open
DTC B1513 Driver Door Handle Circuit Short To Battery
DTC B1514 Driver Door Handle Circuit Short To Ground
DTC B1515 Seat Driver Occupied Switch Circuit Failure
DTC B1516 Seat Driver Occupied Switch Circuit Open
DTC B1517 Seat Driver Occupied Switch Circuit Short To Battery
DTC B1518 Seat Driver Occupied Switch Circuit Short To Ground
DTC B1519 Hood Switch Circuit Failure
DTC B1520 Hood Switch Circuit Open
DTC B1521 Hood Switch Circuit Short To Battery
DTC B1522 Hood Switch Circuit Short To Ground
DTC B1523 Keyless Entry Circuit Failure
DTC B1524 Keyless Entry Circuit Open
DTC B1525 Keyless Entry Circuit Short To Battery
DTC B1526 Keyless Entry Circuit Short To Ground
DTC B1527 Memory Set Switch Circuit Failure
DTC B1528 Memory Set Switch Circuit Open
DTC B1529 Memory Set Switch Circuit Short To Battery
DTC B1530 Memory Set Switch Circuit Short To Ground
DTC B1531 Memory 1 Switch Circuit Failure
DTC B1532 Memory 1 Switch Circuit Open
DTC B1533 Memory 1 Switch Circuit Short To Battery
DTC B1534 Memory 1 Switch Circuit Short To Ground
DTC B1535 Memory 2 Switch Circuit Failure
DTC B1536 Memory 2 Switch Circuit Open
DTC B1537 Memory 2 Switch Circuit Short To Battery
DTC B1538 Memory 2 Switch Circuit Short To Ground
DTC B1539 Mirror Driver Switch Assembly Circuit Failure
DTC B1540 Mirror Driver Switch Assembly Circuit Open
DTC B1541 Mirror Driver Switch Assembly Circuit Short To Battery
DTC B1542 Mirror Driver Switch Assembly Circuit Short To Ground
DTC B1543 Seat Direction Switch Assembly Circuit Failure
DTC B1544 Seat Direction Switch Assembly Circuit Open
DTC B1545 Seat Direction Switch Assembly Circuit Short To Battery
DTC B1546 Seat Direction Switch Assembly Circuit Short To Ground
DTC B1547 Power Window Master Circuit Failure
DTC B1548 Power Window Master Circuit Open
DTC B1549 Power Window Master Circuit Short To Battery
DTC B1550 Power Window Master Circuit Short To Ground
DTC B1551 Decklid Release Circuit Failure
DTC B1552 Decklid Release Circuit Open
DTC B1553 Decklid Release Circuit Short To Battery
DTC B1554 Decklid Release Circuit Short To Ground
DTC B1555 Ignition Run/Start Circuit Failure
DTC B1556 Ignition Run/Start Circuit Open
DTC B1557 Ignition Run/Start Circuit Short To Battery
DTC B1558 Ignition Run/Start Circuit Short To Ground
DTC B1559 Door Lock Cylinder Circuit Failure
DTC B1560 Door Lock Cylinder Circuit Open
DTC B1561 Door Lock Cylinder Circuit Short To Battery
DTC B1562 Door Lock Cylinder Circuit Short To Ground
DTC B1563 Door Ajar Circuit Failure
DTC B1564 Door Ajar Circuit Open
DTC B1565 Door Ajar Circuit Short To Battery
DTC B1566 Door Ajar Circuit Short To Ground
DTC B1567 Lamp Headlamp High-Beam Circuit Failure
DTC B1568 Lamp Headlamp High-Beam Circuit Open
DTC B1569 Lamp Headlamp High-Beam Circuit Short To Battery
DTC B1570 Lamp Headlamp High-Beam Circuit Short To Ground
DTC B1571 Door Ajar LR Circuit Failure
DTC B1572 Door Ajar LR Circuit Open
DTC B1573 Door Ajar LR Circuit Short To Battery
DTC B1574 Door Ajar LR Circuit Short To Ground
DTC B1575 Lamp Park Input Circuit Failure
DTC B1576 Lamp Park Input Circuit Open
DTC B1577 Lamp Park Input Circuit Short To Battery
DTC B1578 Lamp Park Input Circuit Short To Ground
DTC B1579 Dim Panel Increase Input Circuit Failure
DTC B1580 Dim Panel Increase Input Circuit Open
DTC B1581 Dim Panel Increase Input Circuit Short To Battery
DTC B1582 Dim Panel Increase Input Circuit Short To Ground
DTC B1583 Dim Panel Decrease Input Circuit Failure
DTC B1584 Dim Panel Decrease Input Circuit Open
DTC B1585 Dim Panel Decrease Input Circuit Short To Battery
DTC B1586 Dim Panel Decrease Input Circuit Short To Ground
DTC B1587 Autolamp Delay Increase Circuit Failure
DTC B1588 Autolamp Delay Increase Circuit Open
DTC B1589 Autolamp Delay Increase Circuit Short To Battery
DTC B1590 Autolamp Delay Increase Circuit Short To Ground
DTC B1591 Autolamp Delay Decrease Circuit Failure
DTC B1592 Autolamp Delay Decrease Circuit Open
DTC B1593 Autolamp Delay Decrease Circuit Short To Battery
DTC B1594 Autolamp Delay Decrease Circuit Short To Ground
DTC B1595 Ignition Switch Illegal Input Code
DTC B1596 Service Continuous Codes
DTC B1597 Driver’s Seat Seatback Autoglide Forward Switch Circuit Short to Ground
DTC B1598 Driver’s Seat Seatback Autoglide Rearward Switch Circuit Short to Ground
DTC B1599 Passenger’s Seatback Autoglide Forward Switch Circuit Short to Ground
DTC B1600 PATS Ignition Key Transponder Signal Is Not Received
DTC B1601 PATS Received Incorrect Key-Code From Ignition Key Transponder
DTC B1602 PATS Received Invalid Format Of Key-Code From Ignition Key Transponder
DTC B1603 Lamp Anti-Theft Indicator Circuit Failure
DTC B1604 Lamp Anti-Theft Indicator Circuit Open
DTC B1605 Lamp Anti-Theft Indicator Circuit Short To Battery
DTC B1606 Lamp Anti-Theft Indicator Circuit Short To Ground
DTC B1607 Illuminated Entry Input Circuit Failure
DTC B1608 Illuminated Entry Input Open Circuit
DTC B1609 Illuminated Entry Input Short Circuit To Battery
DTC B1610 Illuminated Entry Input Short Circuit To Ground
DTC B1611 Wiper Rear Mode Select Switch Circuit Failure
DTC B1612 Wiper Rear Mode Select Switch Circuit Open
DTC B1613 Wiper Rear Mode Select Switch Circuit Short To Battery
DTC B1614 Wiper Rear Mode Select Switch Circuit Short To Ground
DTC B1615 Wiper Rear Disable Switch Circuit Failure
DTC B1616 Wiper Rear Disable Switch Circuit Open
DTC B1617 Wiper Rear Disable Switch Circuit Short To Battery
DTC B1618 Wiper Rear Disable Switch Circuit Short To Ground
DTC B1619 Wiper Rear Low Limit Input Circuit Failure
DTC B1620 Wiper Rear Low Limit Input Circuit Open
DTC B1621 Wiper Rear Low Limit Input Circuit Short To Battery
DTC B1622 Wiper Rear Low Limit Input Circuit Short To Ground
DTC B1623 Lamp Keypad Output Circuit Failure
DTC B1624 Lamp Keypad Output Open Circuit
DTC B1625 Lamp Keypad Output Short Circuit To Battery
DTC B1626 Lamp Keypad Output Short Circuit To Ground
DTC B1627 PRNDL Reverse Input Circuit Failure
DTC B1628 PRNDL Reverse Input Open Circuit
DTC B1629 PRNDL Reverse Input Short To Battery
DTC B1630 PRNDL Reverse Input Short Circuit To Ground
DTC B1631 Mirror Driver Left Circuit Failure
DTC B1632 Mirror Driver Left Circuit Open
DTC B1633 Mirror Driver Left Circuit Short To Battery
DTC B1634 Mirror Driver Left Circuit Short To Ground
DTC B1635 Mirror Driver Right Circuit Failure
DTC B1636 Mirror Driver Right Circuit Open
DTC B1637 Mirror Driver Right Circuit Short To Battery
DTC B1638 Mirror Driver Right Short To Ground
DTC B1639 Mirror Passenger Left Circuit Failure
DTC B1640 Mirror Passenger Left Circuit Open
DTC B1641 Mirror Passenger Left Circuit Short To Battery
DTC B1642 Mirror Passenger Left Circuit Short To Ground
DTC B1643 Mirror Passenger Right Circuit Failure
DTC B1644 Mirror Passenger Right Circuit Open
DTC B1645 Mirror Passenger Right Circuit Short To Battery
DTC B1646 Mirror Passenger Right Circuit Short To Ground
DTC B1647 Seat Driver Recline Forward Circuit Failure
DTC B1648 Seat Driver Recline Forward Circuit Open
DTC B1649 Seat Driver Recline Forward Circuit Short To Battery
DTC B1650 Seat Driver Recline Forward Circuit Short To Ground
DTC B1651 Seat Driver Recline Backward Circuit Failure
DTC B1652 Seat Driver Recline Backward Circuit Open
DTC B1653 Seat Driver Recline Backward Circuit Short To Battery
DTC B1654 Seat Driver Recline Backward Circuit Short To Ground
DTC B1655 Seat Driver Rear Up Circuit Failure
DTC B1656 Seat Driver Rear Up Circuit Open
DTC B1657 Seat Driver Rear Up Circuit Short To Battery
DTC B1658 Seat Driver Rear Up Circuit Short To Ground
DTC B1659 Seat Driver Front Up Circuit Failure
DTC B1660 Seat Driver Front Up Circuit Open
DTC B1661 Seat Driver Front Up Circuit Short To Battery
DTC B1662 Seat Driver Front Up Circuit Short To Ground
DTC B1663 Seat Driver Front Up/Down Motor Stalled
DTC B1664 Seat Driver Rear Up/Down Motor Stalled
DTC B1665 Seat Driver Forward/Backward Motor Stalled
DTC B1666 Seat Driver Recline Motor Stalled
DTC B1667 Mirror Driver Up/Down Motor Stalled
DTC B1668 Mirror Driver Right/Left Motor Stalled
DTC B1669 Mirror Passenger Up/Down Motor Stalled
DTC B1670 Mirror Passenger Right/Left Motor Stalled
DTC B1671 Battery Module Voltage Out Of Range
DTC B1672 Seat Driver Occupied Input Circuit Failure
DTC B1673 Seat Driver Occupied Input Circuit Open
DTC B1674 Seat Driver Occupied Input Circuit Short To Battery
DTC B1675 Seat Driver Occupied Input Circuit Short To Ground
DTC B1676 Battery Pack Voltage Out Of Range
DTC B1677 Alarm Panic Input Circuit Failure
DTC B1678 Alarm Panic Input Circuit Open
DTC B1679 Alarm Panic Input Circuit Short To Battery
DTC B1680 Alarm Panic Input Circuit Short To Ground
DTC B1681 PATS Transceiver Module Signal Is Not Received
DTC B1682 PATS Is Disabled (Check Link Between PATS And Transponder)
DTC B1683 Mirror Driver/Passenger Switch Circuit Failure
DTC B1684 Mirror Driver/Passenger Switch Circuit Open
DTC B1685 Lamp Dome Input Circuit Failure
DTC B1686 Lamp Dome Input Circuit Open
DTC B1687 Lamp Dome Input Circuit Short To Battery
DTC B1688 Lamp Dome Input Circuit Short To Ground
DTC B1689 Autolamp Delay Circuit Failure
DTC B1690 Autolamp Delay Circuit Open
DTC B1691 Autolamp Delay Circuit Short To Battery
DTC B1692 Autolamp Delay Circuit Short To Ground
DTC B1693 Autolamp On Circuit Failure
DTC B1694 Autolamp On Circuit Open
DTC B1695 Autolamp On Circuit Short To Battery
DTC B1696 Autolamp On Circuit Short To Ground
DTC B1697 Mirror Driver/Passenger Switch Circuit Short To Battery
DTC B1698 Mirror Driver/Passenger Switch Circuit Short To Ground
DTC B1699 Passenger’s Seat Occupied Switch Circuit Short to Ground
DTC B1700 Passenger’s Seatbelt Tension Reducer Circuit Short to Ground
DTC B1701 Seat Driver Recline Forward Switch Circuit Failure
DTC B1702 Seat Driver Recline Forward Switch Circuit Open
DTC B1703 Seat Driver Recline Forward Switch Circuit Short To Battery
DTC B1704 Seat Driver Recline Forward Switch Circuit Short To Ground

DTC Alfa Romeo, OBD2 Chassis/ABS Diagnostic Trouble Codes List:

DTC C1768 Air Suspension Rear Height Sensor Low Signal Circuit Short To Ground
DTC C1770 Air Suspension Vent Solenoid Output Circuit Failure
DTC C1771 Air Suspension Vent Solenoid Output Circuit Open
DTC C1772 Air Suspension Vent Solenoid Output Circuit Short To Battery
DTC C1773 Air Suspension Vent Solenoid Output Circuit Short To Ground
DTC C1774 Coolant Temp. Out of Range
DTC C1775 DC-DC Converter Failure
DTC C1776 Heater System Failure
DTC C1777 Vacuum Pressure Circuit Failure
DTC C1778 Power Steering Failure
DTC C1779 Blower Switch Failure
DTC C1780 Temperature Select Failure
DTC C1781 Engine Coolant Temperature Signal Missing/Fault
DTC C1790 Air Suspension LR Air Spring/Shock Solenoid Output Circuit Failure
DTC C1791 Air Suspension LR Air Spring/Shock Solenoid Output Circuit Open
DTC C1792 Air Suspension LR Air Spring/Shock Solenoid Output Circuit Short To Battery
DTC C1793 Air Suspension LR Air Spring/Shock Solenoid Output Circuit Short To Ground
DTC C1795 Air Suspension RR Air Spring/Shock Solenoid Output Circuit Failure
DTC C1796 Air Suspension RR Air Spring/Shock Solenoid Output Circuit Open
DTC C1797 Air Suspension RR Air Spring/Shock Solenoid Output Circuit Short To Battery
DTC C1798 Air Suspension RR Air Spring/Shock Solenoid Output Circuit Short To Ground
DTC C1800 Air Suspension Reservoir Solenoid Circuit Failure
DTC C1805 Mismatched PCM and/or ABS-TC Module
DTC C1813 Air Suspension LR Vent Request Exceeded Max. Timing
DTC C1814 Air Suspension RR Vent Request Exceeded Max. Timing
DTC C1818 Air Suspension LR Air Compress Request Exceeded Max. Timing
DTC C1819 Air Suspension RR Air Compress Request Exceeded Max. Timing
DTC C1820 Air Suspension RF Air Compress Request Exceeded Max. Timing
DTC C1830 Air Suspension Compressor Relay Circuit Failure
DTC C1831 Air Suspension Compressor Relay Circuit Open
DTC C1832 Air Suspension Compressor Relay Circuit Short To Battery
DTC C1833 Air Suspension Compressor Relay Circuit Short To Ground
DTC C1834 Gauge Drive Current Fault
DTC C1835 Current Sense Circuit Failure
DTC C1836 Battery Temp. Out of Range
DTC C1837 Battery Heater Circuit Failure
DTC C1838 Charging System Fault
DTC C1839 Leakage Fault
DTC C1840 Air Suspension Disable Switch Circuit Failure
DTC C1841 Air Suspension Disable Switch Circuit Open
DTC C1842 Air Suspension Disable Switch Circuit Short To Battery
DTC C1843 Air Suspension Disable Switch Circuit Short To Ground
DTC C1844 Air Suspension Secondary Front Inflator Solenoid Output Circuit Failure
DTC C1845 Air Suspension Front Inflator Solenoid Output Circuit Failure
DTC C1846 Air Suspension Front Inflator Solenoid Output Circuit Open
DTC C1847 Air Suspension Front Inflator Solenoid Output Circuit Short To Battery
DTC C1848 Air Suspension Front Inflator Solenoid Output Circuit Short To Ground
DTC C1849 Master Cylinder Pressure Out of Range
DTC C1850 Air Suspension Warning Lamp Circuit Failure
DTC C1851 Air Suspension Warning Lamp Circuit Open
DTC C1852 Air Suspension Warning Lamp Circuit Short To Battery
DTC C1853 Air Suspension Warning Lamp Circuit Short To Ground
DTC C1854 Motor Temperature Out of Range
DTC C1855 Acceleration Position Sensor Conflict
DTC C1856 Traction Motor Encoder circuit Failure
DTC C1859 PRNDL Input #2 Circuit Failure
DTC C1860 PRNDL Input #3 Circuit Failure
DTC C1861 PRNDL Input #4 Circuit Failure
DTC C1862 Contactor Circuit Failure
DTC C1863 External Charging Fault
DTC C1864 Battery Module Fault
DTC C1865 Air Suspension Rear Inflator Solenoid Output Circuit Failure
DTC C1866 Air Suspension Rear Inflator Solenoid Output Circuit Open
DTC C1867 Air Suspension Rear Inflator Solenoid Output Circuit Short To Battery
DTC C1868 Air Suspension Rear Inflator Solenoid Output Circuit Short To Ground
DTC C1869 Air Suspension Gate Solenoid Output Circuit Failure
DTC C1870 Air Suspension Gate Solenoid Output Circuit Open
DTC C1871 Air Suspension Gate Solenoid Output Circuit Short To Battery
DTC C1872 Air Suspension Gate Solenoid Output Circuit Short To Ground
DTC C1873 Air Suspension RF Air Spring Solenoid Output Circuit Failure
DTC C1874 Air Suspension RF Air Spring Solenoid Output Circuit Open
DTC C1875 Air Suspension RF Air Spring Solenoid Output Circuit Short To Battery
DTC C1876 Air Suspension RF Air Spring Solenoid Output Circuit Short To Ground
DTC C1877 Air Suspension LF Air Spring Solenoid Output Circuit Failure
DTC C1878 Air Suspension LF Air Spring Solenoid Output Circuit Open
DTC C1879 Air Suspension LF Air Spring Solenoid Output Circuit Short To Battery
DTC C1880 Air Suspension LF Air Spring Solenoid Output Circuit Short To Ground
DTC C1881 Air Suspension RF Height Sensor Circuit Failure
DTC C1882 Air Suspension RF Height Sensor Circuit Open
DTC C1883 Air Suspension RF Height Sensor Circuit Short To Battery
DTC C1884 Air Suspension RF Height Sensor Circuit Short To Ground
DTC C1885 Air Suspension RR Height Sensor Circuit Failure
DTC C1886 Air Suspension RR Height Sensor Circuit Open
DTC C1887 Air Suspension RR Height Sensor Circuit Short To Battery
DTC C1888 Air Suspension RR Height Sensor Circuit Short To Ground
DTC C1889 Air Suspension LF Height Sensor Circuit Failure
DTC C1890 Air Suspension LF Height Sensor Circuit Open
DTC C1891 Air Suspension LF Height Sensor Circuit Short To Battery
DTC C1892 Air Suspension LF Height Sensor Circuit Short To Ground
DTC C1893 Air Suspension LR Height Sensor Circuit Failure
DTC C1894 Air Suspension LR Height Sensor Circuit Open
DTC C1895 Air Suspension LR Height Sensor Circuit Short To Battery
DTC C1896 Air Suspension LR Height Sensor Circuit Short To Ground
DTC C1897 Steering VAPS II Circuit Loop Failure
DTC C1898 Steering VAPS II Circuit Loop Open
DTC C1899 Steering VAPS II Circuit Loop Short To Battery
DTC C1900 Steering VAPS II Circuit Loop Short To Ground
DTC C1901 Ride Control RR Shock Actuator Circuit Failure
DTC C1902 Ride Control RR Shock Actuator Circuit Open
DTC C1903 Ride Control RR Shock Actuator Circuit Short To Battery
DTC C1904 Ride Control RR Shock Actuator Circuit Short To Ground
DTC C1905 Ride Control LR Shock Actuator Circuit Failure
DTC C1906 Ride Control LR Shock Actuator Circuit Open
DTC C1907 Ride Control LR Shock Actuator Circuit Short To Battery
DTC C1908 Ride Control LR Shock Actuator Circuit Short To Ground
DTC C1909 Ride Control RF Shock Actuator Circuit Failure
DTC C1910 Ride Control RF Shock Actuator Circuit Open
DTC C1911 Ride Control RF Shock Actuator Circuit Short To Battery
DTC C1912 Ride Control RF Shock Actuator Circuit Short To Ground
DTC C1913 Ride Control LF Shock Actuator Circuit Failure
DTC C1914 Ride Control LF Shock Actuator Circuit Open
DTC C1915 Ride Control LF Shock Actuator Circuit Short To Battery
DTC C1916 Ride Control LF Shock Actuator Circuit Short To Ground
DTC C1917 Steering EVO Out-of-Range Fault
DTC C1918 Air Suspension Ride Height Select Switch Circuit Failure
DTC C1920 Led #1 Circuit Failure
DTC C1921 VAPS Solenoid Actuator Output Circuit Failure
DTC C1922 VAPS Solenoid Actuator Output Circuit Open
DTC C1923 VAPS Solenoid Actuator Output Circuit Short To Battery
DTC C1924 VAPS Solenoid Actuator Output Circuit Short To Ground
DTC C1925 VAPS Solenoid Actuator Return Circuit Failure
DTC C1926 VAPS Solenoid Actuator Return Circuit Open
DTC C1927 VAPS Solenoid Actuator Return Circuit Short To Battery
DTC C1928 VAPS Solenoid Actuator Return Circuit Short To Ground
DTC C1929 Air Suspension Front Compressor Relay Circuit Failure
DTC C1930 Air Suspension Front Compressor Relay Circuit Open
DTC C1931 Air Suspension Front Compressor Relay Circuit Short To Battery
DTC C1932 Air Suspension Front Compressor Relay Circuit Short To Ground
DTC C1933 Solenoid Current Out Of Range
DTC C1934 HPU (Hydraulic Pump Unit) Pressurisation Failure
DTC C1935 Chime Circuit Failure
DTC C1936 Hydraulic Pump Relay Circuit Failure
DTC C1937 Steering Wheel Angle Sensor Offset Failure
DTC C1938 Invalid Steering Wheel Angle Sensor ID
DTC C1939 Brake Pressure Switch Input Circuit Failure
DTC C1940 Brake Pressure Switch Mechanical Failure
DTC C1942 Unrecognized Powertrain Configuration
DTC C1943 Airbag Deployment Indication Input Fault
DTC C1944 Gauge Driver Circuit Fault
DTC C1945 Park Switch Indicates Park with Vehicle Moving
DTC C1946 Seat Track Position Switch Circuit Open
DTC C1947 Seat Track Position Switch Circuit Short to Ground
DTC C1948 Seat Track Position Switch Circuit Resistance Out of Range
DTC C1949 Accelerometer Sensor Circuit Open
DTC C1950 Accelerometer Sensor Circuit Failure
DTC C1951 Lateral Accelerometer Sensor Circuit Open
DTC C1952 Yaw Rate Sensor Circuit Open
DTC C1953 Master Cylinder Pressure Sensor Circuit Open
DTC C1954 Master Cylinder Pressure Sensor Circuit Failure
DTC C1955 Steering Angle Sensor Circuit Open
DTC C1956 Steering Angle Sensor Circuit Failure
DTC C1957 Dynamic Stability Control Valve RF Circuit Failure
DTC C1958 Dynamic Stability Control Valve LF Circuit Failure
DTC C1959 Lateral Accelerometer Sensor Circuit Failure
DTC C1960 Driver Brake Apply Circuit Fault
DTC C1961 Park Lamp Relay Coil Circuit Failure
DTC C1962 Park Lamp Relay Coil Short to Battery
DTC C1963 Stability Control Inhibit Warning

DTC Alfa Romeo, OBD2 Network/Wiring Bus Diagnostic Trouble Codes List:

DTC U1600 Immobilizer signal improbable
DTC U1601 CAN communication short to earth
DTC U1601 CAN communication signal improbable
DTC U1601 CAN communication short to B+
DTC U1601 CAN communication no signal
DTC U1700 CAN bus gearbox control unit short to earth
DTC U1700 CAN bus gearbox control unit signal improbable
DTC U1700 CAN bus gearbox control unit short to B+
DTC U1700 CAN bus gearbox control unit no signal


Taking note that the list is continually evolving, with ongoing expansions to encompass a broader spectrum of OBD2 trouble codes.

Stay tuned for more informative content on maintaining and enhancing your automotive experience.