P03xx codes: Ignition system or misfire
253 powertrain trouble codes from P0300 to P03FF. They mostly involve the engine control module, sensor wiring, cylinder pressure sensor glow plug and ignition wiring.
All P03xx codes
250 of these codes usually turn on the check engine light; 120 can often be fixed at home.
| Code | Meaning | Difficulty |
|---|---|---|
| P0300 | Random/Multiple Cylinder Misfire Detected | Medium |
| P0301 | Cylinder 1 Misfire Detected | Easy |
| P0302 | Cylinder 2 Misfire Detected | Easy |
| P0303 | Cylinder 3 Misfire Detected | Easy |
| P0304 | Cylinder 4 Misfire Detected | Easy |
| P0305 | Cylinder 5 Misfire Detected | Easy |
| P0306 | Cylinder 6 Misfire Detected | Easy |
| P0307 | Cylinder 7 Misfire Detected | Easy |
| P0308 | Cylinder 8 Misfire Detected | Easy |
| P0309 | Cylinder 9 Misfire Detected | Easy |
| P030A | Ignition A Control Signal Circuit/Open | Medium |
| P030B | Ignition A Control Signal Circuit Low | Medium |
| P030C | Ignition A Control Signal Circuit High | Medium |
| P030D | Ignition B Control Signal Circuit/Open | Medium |
| P030E | Ignition B Control Signal Circuit Low | Medium |
| P030F | Ignition B Control Signal Circuit High | Medium |
| P0310 | Cylinder 10 Misfire Detected | Easy |
| P0311 | Cylinder 11 Misfire Detected | Easy |
| P0312 | Cylinder 12 Misfire Detected | Easy |
| P0313 | Misfire Detected with Low Fuel | Easy |
| P0314 | Single Cylinder Misfire (Cylinder Not Specified) | Hard |
| P0315 | Crankshaft Position System Variation Not Learned | Medium |
| P0316 | Engine Misfire Detected on Startup (First 1000 Revolutions) | Medium |
| P0317 | Rough Road Hardware Not Present | Medium |
| P0318 | Rough Road Sensor A Signal Circuit | Medium |
| P0319 | Rough Road Sensor B Signal Circuit | Medium |
| P031A | Ignition C Control Signal Circuit/Open | Medium |
| P031B | Ignition C Control Signal Circuit Low | Medium |
| P031C | Ignition C Control Signal Circuit High | Medium |
| P031D | Ignition D Control Signal Circuit/Open | Medium |
| P031E | Ignition D Control Signal Circuit Low | Medium |
| P031F | Ignition D Control Signal Circuit High | Medium |
| P0320 | Ignition/Distributor Engine Speed Input Circuit | Medium |
| P0321 | Ignition/Distributor Engine Speed Input Circuit Range/Performance | Medium |
| P0322 | Ignition/Distributor Engine Speed Input Circuit No Signal | Medium |
| P0323 | Ignition/Distributor Engine Speed Input Circuit Intermittent | Medium |
| P0324 | Knock/Combustion Vibration Control System Error | Medium |
| P0325 | Knock/Combustion Vibration Sensor A Circuit | Medium |
| P0326 | Knock/Combustion Vibration Sensor A Circuit Range/Performance | Medium |
| P0327 | Knock/Combustion Vibration Sensor A Circuit Low | Medium |
| P0328 | Knock/Combustion Vibration Sensor A Circuit High | Medium |
| P0329 | Knock/Combustion Vibration Sensor A Circuit Intermittent | Medium |
| P032A | Knock/Combustion Vibration Sensor C Circuit | Medium |
| P032B | Knock/Combustion Vibration Sensor C Circuit Range/Performance | Medium |
| P032C | Knock/Combustion Vibration Sensor C Circuit Low | Medium |
| P032D | Knock/Combustion Vibration Sensor C Circuit High | Medium |
| P032E | Knock/Combustion Vibration Sensor C Circuit Intermittent | Medium |
| P032F | Combustion Engine Producing Insufficient Torque | Hard |
| P0330 | Knock/Combustion Vibration Sensor B Circuit | Medium |
| P0331 | Knock/Combustion Vibration Sensor B Circuit Range/Performance | Medium |
| P0332 | Knock/Combustion Vibration Sensor B Circuit Low | Medium |
| P0333 | Knock/Combustion Vibration Sensor B Circuit High | Medium |
| P0334 | Knock/Combustion Vibration Sensor B Circuit Intermittent | Medium |
| P0335 | Crankshaft Position Sensor A Circuit | Medium |
| P0336 | Crankshaft Position Sensor A Circuit Range/Performance | Medium |
| P0337 | Crankshaft Position Sensor A Circuit Low | Medium |
| P0338 | Crankshaft Position Sensor A Circuit High | Medium |
| P0339 | Crankshaft Position Sensor A Circuit Intermittent | Medium |
| P033A | Knock/Combustion Vibration Sensor D Circuit | Medium |
| P033B | Knock/Combustion Vibration Sensor D Circuit Range/Performance | Medium |
| P033C | Knock/Combustion Vibration Sensor D Circuit Low | Medium |
| P033D | Knock/Combustion Vibration Sensor D Circuit High | Medium |
| P033E | Knock/Combustion Vibration Sensor D Circuit Intermittent | Medium |
| P033F | Crankshaft/Camshaft Loss Of Synchronization | Medium |
| P0340 | Camshaft Position Sensor A Circuit Bank 1 or Single Sensor | Easy |
| P0341 | Camshaft Position Sensor A Circuit Range/Performance Bank 1 or Single Sensor | Medium |
| P0342 | Camshaft Position Sensor A Circuit Low Bank 1 or Single Sensor | Easy |
| P0343 | Camshaft Position Sensor A Circuit High Bank 1 or Single Sensor | Easy |
| P0344 | Camshaft Position Sensor A Circuit Intermittent Bank 1 or Single Sensor | Easy |
| P0345 | Camshaft Position Sensor A Circuit Bank 2 | Medium |
| P0346 | Camshaft Position Sensor A Circuit Range/Performance Bank 2 | Medium |
| P0347 | Camshaft Position Sensor A Circuit Low Bank 2 | Medium |
| P0348 | Camshaft Position Sensor A Circuit High Bank 2 | Medium |
| P0349 | Camshaft Position Sensor A Circuit Intermittent Bank 2 | Medium |
| P034A | Crankshaft Position Sensor - Crankshaft Start Position Incorrect | Medium |
| P034B | Crankshaft Position Sensor - Crankshaft Direction Incorrect | Medium |
| P034C | Ion Sense System Performance | Medium |
| P0350 | Ignition Coil Primary/Secondary Circuit/Open | Medium |
| P0351 | Ignition Coil A Primary Control Circuit/Open | Easy |
| P0352 | Ignition Coil B Primary Control Circuit/Open | Easy |
| P0353 | Ignition Coil C Primary Control Circuit/Open | Easy |
| P0354 | Ignition Coil D Primary Control Circuit/Open | Easy |
| P0355 | Ignition Coil E Primary Control Circuit/Open | Easy |
| P0356 | Ignition Coil F Primary Control Circuit/Open | Easy |
| P0357 | Ignition Coil G Primary Control Circuit/Open | Easy |
| P0358 | Ignition Coil H Primary Control Circuit/Open | Easy |
| P0359 | Ignition Coil I Primary Control Circuit/Open | Medium |
| P035A | Ignition E Control Signal Circuit/Open | Medium |
| P035B | Ignition E Control Signal Circuit Low | Medium |
| P035C | Ignition E Control Signal Circuit High | Medium |
| P035D | Ignition F Control Signal Circuit/Open | Medium |
| P035E | Ignition F Control Signal Circuit Low | Medium |
| P035F | Ignition F Control Signal Circuit High | Medium |
| P0360 | Ignition Coil J Primary Control Circuit/Open | Medium |
| P0361 | Ignition Coil K Primary Control Circuit/Open | Medium |
| P0362 | Ignition Coil L Primary Control Circuit/Open | Medium |
| P0363 | Misfire Detected - Fueling Disabled | Medium |
| P0364 | DC/AC Converter Control Module Control Circuit Range/Performance | Hard |
| P0365 | Camshaft Position Sensor B Circuit Bank 1 | Easy |
| P0366 | Camshaft Position Sensor B Circuit Range/Performance Bank 1 | Easy |
| P0367 | Camshaft Position Sensor B Circuit Low Bank 1 | Easy |
| P0368 | Camshaft Position Sensor B Circuit High Bank 1 | Easy |
| P0369 | Camshaft Position Sensor B Circuit Intermittent Bank 1 | Easy |
| P036A | Ignition G Control Signal Circuit/Open | Medium |
| P036B | Ignition G Control Signal Circuit Low | Medium |
| P036C | Ignition G Control Signal Circuit High | Medium |
| P036D | Ignition H Control Signal Circuit/Open | Medium |
| P036E | Ignition H Control Signal Circuit Low | Medium |
| P036F | Ignition H Control Signal Circuit High | Medium |
| P0370 | Timing Reference High Resolution Signal A | Hard |
| P0371 | Timing Reference High Resolution Signal A Too Many Pulses | Hard |
| P0372 | Timing Reference High Resolution Signal A Too Few Pulses | Hard |
| P0373 | Timing Reference High Resolution Signal A Intermittent/Erratic Pulses | Hard |
| P0374 | Timing Reference High Resolution Signal A No Pulses | Hard |
| P0375 | Timing Reference High Resolution Signal B | Hard |
| P0376 | Timing Reference High Resolution Signal B Too Many Pulses | Hard |
| P0377 | Timing Reference High Resolution Signal B Too Few Pulses | Hard |
| P0378 | Timing Reference High Resolution Signal B Intermittent/Erratic Pulses | Hard |
| P0379 | Timing Reference High Resolution Signal B No Pulses | Hard |
| P037A | Glow Plug/Heater Indicator Control Circuit Low | Medium |
| P037B | Glow Plug/Heater Indicator Control Circuit High | Medium |
| P037C | Cold Start Camshaft Profile System Performance | Medium |
| P037D | Glow Plug Sense Circuit | Medium |
| P037E | Glow Plug Sense Circuit Low | Medium |
| P037F | Glow Plug Sense Circuit High | Medium |
| P0380 | Glow Plug/Heater Circuit A | Medium |
| P0381 | Glow Plug/Heater Indicator Control Circuit/Open | Medium |
| P0382 | Glow Plug/Heater Circuit B | Medium |
| P0383 | Glow Plug Control Module 1 Control Circuit Low | Medium |
| P0384 | Glow Plug Control Module 1 Control Circuit High | Medium |
| P0385 | Crankshaft Position Sensor B Circuit | Medium |
| P0386 | Crankshaft Position Sensor B Circuit Range/Performance | Medium |
| P0387 | Crankshaft Position Sensor B Circuit Low | Medium |
| P0388 | Crankshaft Position Sensor B Circuit High | Medium |
| P0389 | Crankshaft Position Sensor B Circuit Intermittent | Medium |
| P038A | Ignition I Control Signal Circuit/Open | Medium |
| P038B | Ignition I Control Signal Circuit Low | Medium |
| P038C | Ignition I Control Signal Circuit High | Medium |
| P038D | Ignition J Control Signal Circuit/Open | Medium |
| P038E | Ignition J Control Signal Circuit Low | Medium |
| P038F | Ignition J Control Signal Circuit High | Medium |
| P0390 | Camshaft Position Sensor B Circuit Bank 2 | Medium |
| P0391 | Camshaft Position Sensor B Circuit Range/Performance Bank 2 | Medium |
| P0392 | Camshaft Position Sensor B Circuit Low Bank 2 | Medium |
| P0393 | Camshaft Position Sensor B Circuit High Bank 2 | Medium |
| P0394 | Camshaft Position Sensor B Circuit Intermittent Bank 2 | Medium |
| P0395 | Cylinder 1 Pressure Sensor Circuit | Medium |
| P0396 | Cylinder 1 Pressure Sensor Circuit Range/Performance | Medium |
| P0397 | Cylinder 1 Pressure Sensor Circuit Low | Medium |
| P0398 | Cylinder 1 Pressure Sensor Circuit High | Medium |
| P0399 | Cylinder 1 Pressure Sensor Circuit Intermittent/Erratic | Medium |
| P039A | Cylinder 1 Pressure Too Low | Hard |
| P039B | Cylinder 1 Pressure Too High | Medium |
| P039C | Cylinder 1 Pressure Variation Low | Medium |
| P039D | Cylinder 1 Pressure Variation High | Medium |
| P039E | Cylinder 1 Combustion Performance | Hard |
| P039F | Cylinder 2 Pressure Sensor Circuit | Medium |
| P03A0 | Cylinder 2 Pressure Sensor Circuit Range/Performance | Medium |
| P03A1 | Cylinder 2 Pressure Sensor Circuit Low | Medium |
| P03A2 | Cylinder 2 Pressure Sensor Circuit High | Medium |
| P03A3 | Cylinder 2 Pressure Sensor Circuit Intermittent/Erratic | Medium |
| P03A4 | Cylinder 2 Pressure Too Low | Hard |
| P03A5 | Cylinder 2 Pressure Too High | Medium |
| P03A6 | Cylinder 2 Pressure Variation Low | Medium |
| P03A7 | Cylinder 2 Pressure Variation High | Medium |
| P03A8 | Cylinder 2 Combustion Performance | Hard |
| P03A9 | Cylinder 3 Pressure Sensor Circuit | Medium |
| P03AA | Cylinder 3 Pressure Sensor Circuit Range/Performance | Medium |
| P03AB | Cylinder 3 Pressure Sensor Circuit Low | Medium |
| P03AC | Cylinder 3 Pressure Sensor Circuit High | Medium |
| P03AD | Cylinder 3 Pressure Sensor Circuit Intermittent/Erratic | Medium |
| P03AE | Cylinder 3 Pressure Too Low | Hard |
| P03AF | Cylinder 3 Pressure Too High | Medium |
| P03B0 | Cylinder 3 Pressure Variation Low | Medium |
| P03B1 | Cylinder 3 Pressure Variation High | Medium |
| P03B2 | Cylinder 3 Combustion Performance | Hard |
| P03B3 | Cylinder 4 Pressure Sensor Circuit | Medium |
| P03B4 | Cylinder 4 Pressure Sensor Circuit Range/Performance | Medium |
| P03B5 | Cylinder 4 Pressure Sensor Circuit Low | Medium |
| P03B6 | Cylinder 4 Pressure Sensor Circuit High | Medium |
| P03B7 | Cylinder 4 Pressure Sensor Circuit Intermittent/Erratic | Medium |
| P03B8 | Cylinder 4 Pressure Too Low | Hard |
| P03B9 | Cylinder 4 Pressure Too High | Medium |
| P03BA | Cylinder 4 Pressure Variation Low | Medium |
| P03BB | Cylinder 4 Pressure Variation High | Medium |
| P03BC | Cylinder 4 Combustion Performance | Hard |
| P03BD | Cylinder 5 Pressure Sensor Circuit | Medium |
| P03BE | Cylinder 5 Pressure Sensor Circuit Range/Performance | Medium |
| P03BF | Cylinder 5 Pressure Sensor Circuit Low | Medium |
| P03C0 | Cylinder 5 Pressure Sensor Circuit High | Medium |
| P03C1 | Cylinder 5 Pressure Sensor Circuit Intermittent/Erratic | Medium |
| P03C2 | Cylinder 5 Pressure Too Low | Hard |
| P03C3 | Cylinder 5 Pressure Too High | Medium |
| P03C4 | Cylinder 5 Pressure Variation Low | Medium |
| P03C5 | Cylinder 5 Pressure Variation High | Medium |
| P03C6 | Cylinder 5 Combustion Performance | Hard |
| P03C7 | Cylinder 6 Pressure Sensor Circuit | Medium |
| P03C8 | Cylinder 6 Pressure Sensor Circuit Range/Performance | Medium |
| P03C9 | Cylinder 6 Pressure Sensor Circuit Low | Medium |
| P03CA | Cylinder 6 Pressure Sensor Circuit High | Medium |
| P03CB | Cylinder 6 Pressure Sensor Circuit Intermittent/Erratic | Medium |
| P03CC | Cylinder 6 Pressure Too Low | Hard |
| P03CD | Cylinder 6 Pressure Too High | Medium |
| P03CE | Cylinder 6 Pressure Variation Low | Medium |
| P03CF | Cylinder 6 Pressure Variation High | Medium |
| P03D0 | Cylinder 6 Combustion Performance | Hard |
| P03D1 | Cylinder 7 Pressure Sensor Circuit | Medium |
| P03D2 | Cylinder 7 Pressure Sensor Circuit Range/Performance | Medium |
| P03D3 | Cylinder 7 Pressure Sensor Circuit Low | Medium |
| P03D4 | Cylinder 7 Pressure Sensor Circuit High | Medium |
| P03D5 | Cylinder 7 Pressure Sensor Circuit Intermittent/Erratic | Medium |
| P03D6 | Cylinder 7 Pressure Too Low | Hard |
| P03D7 | Cylinder 7 Pressure Too High | Medium |
| P03D8 | Cylinder 7 Pressure Variation Low | Medium |
| P03D9 | Cylinder 7 Pressure Variation High | Medium |
| P03DA | Cylinder 7 Combustion Performance | Hard |
| P03DB | Cylinder 8 Pressure Sensor Circuit | Medium |
| P03DC | Cylinder 8 Pressure Sensor Circuit Range/Performance | Medium |
| P03DD | Cylinder 8 Pressure Sensor Circuit Low | Medium |
| P03DE | Cylinder 8 Pressure Sensor Circuit High | Medium |
| P03DF | Cylinder 8 Pressure Sensor Circuit Intermittent/Erratic | Medium |
| P03E0 | Cylinder 8 Pressure Too Low | Hard |
| P03E1 | Cylinder 8 Pressure Too High | Medium |
| P03E2 | Cylinder 8 Pressure Variation Low | Medium |
| P03E3 | Cylinder 8 Pressure Variation High | Medium |
| P03E4 | Cylinder 8 Combustion Performance | Hard |
| P03E5 | A Camshaft Position Actuator Position Sensor C Circuit Bank 1 | Medium |
| P03E6 | A Camshaft Position Actuator Position Sensor C Range/Performance Bank 1 | Medium |
| P03E7 | A Camshaft Position Actuator Position Sensor C Circuit Low Bank 1 | Medium |
| P03E8 | A Camshaft Position Actuator Position Sensor C Circuit High Bank 1 | Medium |
| P03E9 | A Camshaft Profile Actuator Position Sensor A Exceeded Learning Limit | Hard |
| P03EA | A Camshaft Profile Actuator Position Sensor B Exceeded Learning Limit | Hard |
| P03EB | A Camshaft Profile Actuator Position Sensor C Exceeded Learning Limit | Hard |
| P03EC | A Camshaft Profile Actuator C Control Circuit/Open Bank 1 | Medium |
| P03ED | A Camshaft Profile Actuator C Control Circuit Low Bank 1 | Medium |
| P03EE | A Camshaft Profile Actuator C Control Circuit High Bank 1 | Medium |
| P03EF | A Camshaft Profile Actuator C Control Performance/Stuck Off Bank 1 | Medium |
| P03F0 | A Camshaft Profile Actuator C Control Stuck On Bank 1 | Hard |
| P03F1 | B Camshaft Profile Actuator C Control Circuit/Open Bank 1 | Medium |
| P03F2 | B Camshaft Profile Actuator C Control Circuit Low Bank 1 | Medium |
| P03F3 | B Camshaft Profile Actuator C Control Circuit High Bank 1 | Medium |
| P03F4 | B Camshaft Profile Actuator C Control Performance/Stuck Off Bank 1 | Medium |
| P03F5 | B Camshaft Profile Actuator C Control Stuck On Bank 1 | Hard |
| P03F6 | B Camshaft Position Actuator Position Sensor C Circuit Bank 1 | Medium |
| P03F7 | B Camshaft Position Actuator Position Sensor C Range/Performance Bank 1 | Medium |
| P03F8 | B Camshaft Position Actuator Position Sensor C Circuit Low Bank 1 | Medium |
| P03F9 | B Camshaft Position Actuator Position Sensor C Circuit High Bank 1 | Medium |
| P03FA | Ignition K Control Signal Circuit/Open | Medium |
| P03FB | Ignition K Control Signal Circuit Low | Medium |
| P03FC | Ignition K Control Signal Circuit High | Medium |
| P03FD | Ignition L Control Signal Circuit/Open | Medium |
| P03FE | Ignition L Control Signal Circuit Low | Medium |
| P03FF | Ignition L Control Signal Circuit High | Medium |