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General Motors OBD II Powertrain Diagnostic Trouble Codes P1300-P1499

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Diagnostic Trouble Code numbers are read by plugging a code reader or scan tool into the vehicle diagnostic connector (usually located under the instrument panel near the steering column) that can read vehicle manufacturer enhanced or P1 c odes (not just generic or P0 codes). The presence of a code will turn on the Check Engine Light. The light will remain on until the code has been erased. The code number does not tell you which part has failed. It only indicates a possible fault has been detected in the circuit, system or sensor described. Further testing is usually required to isolate the fault BEFORE repairs are made.

For vehicle specific diagnostic charts and vehicle specific repair information, refer to a service manual, or get a subscription to the GM Tech Info website, or AllDataDIY.


The following is a partial listing of common General Motors specific "P1" enhanced OBD II fault codes:

The following is a partial listing of common General Motors specific "P1" enhanced OBD II fault codes:


GM Trouble Code List P1300-P1499

NOTE: For some code numbers, there may be more than one definition because the same number may be used for different faults on different model years or models.

scan tool companion information

P1300....Ignition coil 1 primary feedback circuit

P1305....Ignition Coil 2 primary feedback circuit

P1310....Ignition Coil 3 primary feedback circuit

P1315....Ignition Coil 4 primary feedback circuit

P1320....Distributorless ignition 4X signal intermittent

P1321....Electronic ignition system fault

P1322....Electronic ignition system control missing

P1323....Loss of high resolution rpm signal

P1324....Crank rpm too low

P1335....Crankshaft positioning sensing circuit

P1336....Crankshaft position system variation not learned

P1345....Camshaft to crankshaft position correlation fault

P1346....Crankshaft sensor system variation not learned, or intake camshaft position out of range

P1349....Intake Camshaft position system

P1350....Ignition control system

P1351....Ignition control circuit voltage high

P1351....Ignition control circuit open

P1352....Bypass circuit open or voltage high

P1353....Ignition control output high/pulse detected when ground cylinder #3

P1354....Ignition control output high/pulse detected when ground cylinder #4

P1355....Ignition control output high/pulse detected when ground cylinder #5

P1356....Ignition control output high/pulse detected when ground cylinder #6

P1357....Ignition control output high/pulse detected when ground cylinder #7

P1358....Ignition control output high/pulse detected when ground cylinder #8

P1359....Ignition Coil group 1 control circuit

P1360....Ignition Coil group 2 control circuit

P1361....Ignition control cylinder #1 not toggling after enable,or low voltage

P1362....Ignition control cylinder #2 not toggling after enable,or low voltage, or bypass circuit shorted or low voltage

P1363....Ignition control cylinder #3 not toggling after enable,or low voltage

P1364....Ignition control cylinder #4 not toggling after enable,or low voltage

P1365....Ignition control cylinder #5 not toggling after enable,or low voltage

P1366....Ignition control cylinder #6 not toggling after enable,or low voltage

P1367....Ignition control cylinder #7 not toggling after enable,or low voltage

P1368....Ignition control cylinder #8 not toggling after enable, or low voltage

P1370....Too many ignition reference pulses

P1371....Too few ignition reference pulses

P1372....Crankshaft Position Sensor A-B correlation ( Click Here for help troubleshooting Crankshaft Position Sensors)

P1374....Crankshaft position sensor, 3X Reference circuit

P1375....24X Reference circuit voltage too high

P1376....Reference voltage low, or ignition ground circuit

P1377....Ignition control module CAM pulse to 4X reference pulse comparison

P1380....ABS rough road/misfire diagnosis prevented

P1381....Misfire detected, no EBCM/PCM serial data

P1401....Exhaust Gas Recirculation flow test fault ( Click Here for help troubleshooting EGR problems)

P1403....Exhaust Gas Recirculation Solenoid 1 error

P1404....Exhaust Gas Recirculation Solenoid 2 error

P1405....Exhaust Gas Rrecirculation Solenoid 3 error

P1406....Exhaust Gas Recirculation pintle position error

P1407....EGR valve air leak

P1408....EGR valve vacuum failure

P1409....EGR valve vacuum leak

P1410....EGR valve vacuum restriction, or fuel tank pressure system

P1415....AIR system Bank 1

P1416....AIR system Bank 2

P1431....Fuel Level Sensor 2 circuit

P1432....Fuel Level Sensor 2 circuit low voltage

P1433....Fuel Level Sensor 2 circuit voltage high

P1441....EVAP Canister continuous open purge flow,or high voltage during non-purge (Click Here for help diagnosing EVAP faults )

P1442....EVAP monitor circuit/vacuum switch high voltage

P1450....Barometric Pressure Sensor (BARO) circuit

P1451....Barometric Pressure Sensor performance

P1460....Cooling Fan control system, or misfire detected (Catera only) ( Click Here for help troubleshooting Cooling Fan problems)

P1483....Engine cooling system performance ( Click Here for help troubleshooting causes of Engine Overheating)


Click Here for List of GM Codes P1000 to P1299

Click Here for List of GM Codes P1500 to P1699

Click Here for List of GM Codes P1700 to P1899



Click here for engine sensor and PCM related articles.

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