Fault codes P03xx: ignition and misfires
These codes concern ignition (coils, spark plugs, crankshaft and camshaft position sensors) and combustion misfires. A flashing check engine light often signals significant misfires: slow down and stop safely as soon as possible, the catalytic converter may be damaged.
Official codes: 253, from smallest to largest. Tap a code to get a direct link to share.
| Code | Meaning |
|---|---|
| P0300 | Random/Multiple Cylinder Misfire Detected |
| P0301 | Cylinder 1 Misfire Detected |
| P0302 | Cylinder 2 Misfire Detected |
| P0303 | Cylinder 3 Misfire Detected |
| P0304 | Cylinder 4 Misfire Detected |
| P0305 | Cylinder 5 Misfire Detected |
| P0306 | Cylinder 6 Misfire Detected |
| P0307 | Cylinder 7 Misfire Detected |
| P0308 | Cylinder 8 Misfire Detected |
| P0309 | Cylinder 9 Misfire Detected |
| P030A | Ignition A Control Signal Circuit/Open |
| P030B | Ignition A Control Signal Circuit Low |
| P030C | Ignition A Control Signal Circuit High |
| P030D | Ignition B Control Signal Circuit/Open |
| P030E | Ignition B Control Signal Circuit Low |
| P030F | Ignition B Control Signal Circuit High |
| P0310 | Cylinder 10 Misfire Detected |
| P0311 | Cylinder 11 Misfire Detected |
| P0312 | Cylinder 12 Misfire Detected |
| P0313 | Misfire Detected with Low Fuel |
| P0314 | Single Cylinder Misfire — Cylinder Not Specified |
| P0315 | Crankshaft Position System Variation Not Learned |
| P0316 | Engine Misfire Detected on Startup (First 1000 Revolutions) |
| P0317 | Rough Road Hardware Not Present |
| P0318 | Rough Road Sensor A Signal Circuit |
| P0319 | Rough Road Sensor B Signal Circuit |
| P031A | Ignition C Control Signal Circuit/Open |
| P031B | Ignition C Control Signal Circuit Low |
| P031C | Ignition C Control Signal Circuit High |
| P031D | Ignition D Control Signal Circuit/Open |
| P031E | Ignition D Control Signal Circuit Low |
| P031F | Ignition D Control Signal Circuit High |
| P0320 | Ignition/Distributor Engine Speed Input Circuit |
| P0321 | Ignition/Distributor Engine Speed Input Circuit Range/Performance |
| P0322 | Ignition/Distributor Engine Speed Input Circuit No Signal |
| P0323 | Ignition/Distributor Engine Speed Input Circuit Intermittent |
| P0324 | Knock/Combustion Vibration Control System Error |
| P0325 | Knock Sensor 1 Circuit Malfunction (Bank 1) |
| P0326 | Knock/Combustion Vibration Sensor A Circuit Range/Performance |
| P0327 | Knock Sensor 1 Circuit Low Input (Bank 1) |
| P0328 | Knock Sensor 1 Circuit High Input (Bank 1) |
| P0329 | Knock/Combustion Vibration Sensor A Circuit Intermittent |
| P032A | Knock/Combustion Vibration Sensor C Circuit |
| P032B | Knock/Combustion Vibration Sensor C Circuit Range/Performance |
| P032C | Knock/Combustion Vibration Sensor C Circuit Low |
| P032D | Knock/Combustion Vibration Sensor C Circuit High |
| P032E | Knock/Combustion Vibration Sensor C Circuit Intermittent |
| P032F | Combustion Engine Producing Insufficient Torque |
| P0330 | Knock Sensor 2 Circuit (Bank 2) |
| P0331 | Knock/Combustion Vibration Sensor B Circuit Range/Performance |
| P0332 | Knock Sensor 2 Circuit Low Input (Bank 2) |
| P0333 | Knock Sensor 2 Circuit High Input (Bank 2) |
| P0334 | Knock/Combustion Vibration Sensor B Circuit Intermittent |
| P0335 | Crankshaft Position Sensor "A" Circuit Malfunction |
| P0336 | Crankshaft Position Sensor "A" Circuit Range/Performance |
| P0337 | Crankshaft Position Sensor "A" Circuit Low Input |
| P0338 | Crankshaft Position Sensor "A" Circuit High Input |
| P0339 | Crankshaft Position Sensor A Circuit Intermittent |
| P033A | Knock/Combustion Vibration Sensor D Circuit |
| P033B | Knock/Combustion Vibration Sensor D Circuit Range/Performance |
| P033C | Knock/Combustion Vibration Sensor D Circuit Low |
| P033D | Knock/Combustion Vibration Sensor D Circuit High |
| P033E | Knock/Combustion Vibration Sensor D Circuit Intermittent |
| P033F | Crankshaft/Camshaft Loss Of Synchronization |
| P0340 | Camshaft Position Sensor "A" Circuit (Bank 1 or Single Sensor) |
| P0341 | Camshaft Position Sensor "A" Circuit Range/Performance (Bank 1) |
| P0342 | Camshaft Position Sensor "A" Circuit Low Input (Bank 1) |
| P0343 | Camshaft Position Sensor "A" Circuit High Input (Bank 1) |
| P0344 | Camshaft Position Sensor A Circuit Intermittent (Bank 1 or Single Sensor) |
| P0345 | Camshaft Position Sensor "A" Circuit (Bank 2) |
| P0346 | Camshaft Position Sensor "A" Circuit Range/Performance (Bank 2) |
| P0347 | Camshaft Position Sensor A Circuit Low (Bank 2) |
| P0348 | Camshaft Position Sensor A Circuit High (Bank 2) |
| P0349 | Camshaft Position Sensor A Circuit Intermittent (Bank 2) |
| P034A | Crankshaft Position Sensor - Crankshaft Start Position Incorrect |
| P034B | Crankshaft Position Sensor - Crankshaft Direction Incorrect |
| P034C | Ion Sense System Performance |
| P0350 | Ignition Coil Primary/Secondary Circuit/Open |
| P0351 | Ignition Coil "A" Primary/Secondary Circuit Malfunction (Cylinder 1) |
| P0352 | Ignition Coil "B" Primary/Secondary Circuit Malfunction (Cylinder 2) |
| P0353 | Ignition Coil "C" Primary/Secondary Circuit Malfunction (Cylinder 3) |
| P0354 | Ignition Coil "D" Primary/Secondary Circuit Malfunction (Cylinder 4) |
| P0355 | Ignition Coil "E" Primary/Secondary Circuit |
| P0356 | Ignition Coil "F" Primary/Secondary Circuit |
| P0357 | Ignition Coil "G" Primary/Secondary Circuit |
| P0358 | Ignition Coil "H" Primary/Secondary Circuit |
| P0359 | Ignition Coil I Primary Control Circuit/Open |
| P035A | Ignition E Control Signal Circuit/Open |
| P035B | Ignition E Control Signal Circuit Low |
| P035C | Ignition E Control Signal Circuit High |
| P035D | Ignition F Control Signal Circuit/Open |
| P035E | Ignition F Control Signal Circuit Low |
| P035F | Ignition F Control Signal Circuit High |
| P0360 | Ignition Coil J Primary Control Circuit/Open |
| P0361 | Ignition Coil K Primary Control Circuit/Open |
| P0362 | Ignition Coil L Primary Control Circuit/Open |
| P0363 | Misfire Detected - Fueling Disabled |
| P0364 | DC/AC Converter Control Module Control Circuit Range/Performance |
| P0365 | Camshaft Position Sensor B Circuit (Bank 1) |
| P0366 | Camshaft Position Sensor B Circuit Range/Performance (Bank 1) |
| P0367 | Camshaft Position Sensor B Circuit Low (Bank 1) |
| P0368 | Camshaft Position Sensor B Circuit High (Bank 1) |
| P0369 | Camshaft Position Sensor B Circuit Intermittent (Bank 1) |
| P036A | Ignition G Control Signal Circuit/Open |
| P036B | Ignition G Control Signal Circuit Low |
| P036C | Ignition G Control Signal Circuit High |
| P036D | Ignition H Control Signal Circuit/Open |
| P036E | Ignition H Control Signal Circuit Low |
| P036F | Ignition H Control Signal Circuit High |
| P0370 | Timing Reference High Resolution Signal A |
| P0371 | Timing Reference High Resolution Signal A Too Many Pulses |
| P0372 | Timing Reference High Resolution Signal A Too Few Pulses |
| P0373 | Timing Reference High Resolution Signal A Intermittent/Erratic Pulses |
| P0374 | Timing Reference High Resolution Signal A No Pulses |
| P0375 | Timing Reference High Resolution Signal B |
| P0376 | Timing Reference High Resolution Signal B Too Many Pulses |
| P0377 | Timing Reference High Resolution Signal B Too Few Pulses |
| P0378 | Timing Reference High Resolution Signal B Intermittent/Erratic Pulses |
| P0379 | Timing Reference High Resolution Signal B No Pulses |
| P037A | Glow Plug/Heater Indicator Control Circuit Low |
| P037B | Glow Plug/Heater Indicator Control Circuit High |
| P037C | Cold Start Camshaft Profile System Performance |
| P037D | Glow Plug Sense Circuit |
| P037E | Glow Plug Sense Circuit Low |
| P037F | Glow Plug Sense Circuit High |
| P0380 | Glow Plug/Heater Circuit "A" Malfunction |
| P0381 | Glow Plug/Heater Indicator Circuit Malfunction |
| P0382 | Glow Plug/Heater Circuit B |
| P0383 | Glow Plug Control Module 1 Control Circuit Low |
| P0384 | Glow Plug Control Module 1 Control Circuit High |
| P0385 | Crankshaft Position Sensor B Circuit |
| P0386 | Crankshaft Position Sensor B Circuit Range/Performance |
| P0387 | Crankshaft Position Sensor B Circuit Low |
| P0388 | Crankshaft Position Sensor B Circuit High |
| P0389 | Crankshaft Position Sensor B Circuit Intermittent |
| P038A | Ignition I Control Signal Circuit/Open |
| P038B | Ignition I Control Signal Circuit Low |
| P038C | Ignition I Control Signal Circuit High |
| P038D | Ignition J Control Signal Circuit/Open |
| P038E | Ignition J Control Signal Circuit Low |
| P038F | Ignition J Control Signal Circuit High |
| P0390 | Camshaft Position Sensor B Circuit (Bank 2) |
| P0391 | Camshaft Position Sensor B Circuit Range/Performance (Bank 2) |
| P0392 | Camshaft Position Sensor B Circuit Low (Bank 2) |
| P0393 | Camshaft Position Sensor B Circuit High (Bank 2) |
| P0394 | Camshaft Position Sensor B Circuit Intermittent (Bank 2) |
| P0395 | Cylinder 1 Pressure Sensor Circuit |
| P0396 | Cylinder 1 Pressure Sensor Circuit Range/Performance |
| P0397 | Cylinder 1 Pressure Sensor Circuit Low |
| P0398 | Cylinder 1 Pressure Sensor Circuit High |
| P0399 | Cylinder 1 Pressure Sensor Circuit Intermittent/Erratic |
| P039A | Cylinder 1 Pressure Too Low |
| P039B | Cylinder 1 Pressure Too High |
| P039C | Cylinder 1 Pressure Variation Low |
| P039D | Cylinder 1 Pressure Variation High |
| P039E | Cylinder 1 Combustion Performance |
| P039F | Cylinder 2 Pressure Sensor Circuit |
| P03A0 | Cylinder 2 Pressure Sensor Circuit Range/Performance |
| P03A1 | Cylinder 2 Pressure Sensor Circuit Low |
| P03A2 | Cylinder 2 Pressure Sensor Circuit High |
| P03A3 | Cylinder 2 Pressure Sensor Circuit Intermittent/Erratic |
| P03A4 | Cylinder 2 Pressure Too Low |
| P03A5 | Cylinder 2 Pressure Too High |
| P03A6 | Cylinder 2 Pressure Variation Low |
| P03A7 | Cylinder 2 Pressure Variation High |
| P03A8 | Cylinder 2 Combustion Performance |
| P03A9 | Cylinder 3 Pressure Sensor Circuit |
| P03AA | Cylinder 3 Pressure Sensor Circuit Range/Performance |
| P03AB | Cylinder 3 Pressure Sensor Circuit Low |
| P03AC | Cylinder 3 Pressure Sensor Circuit High |
| P03AD | Cylinder 3 Pressure Sensor Circuit Intermittent/Erratic |
| P03AE | Cylinder 3 Pressure Too Low |
| P03AF | Cylinder 3 Pressure Too High |
| P03B0 | Cylinder 3 Pressure Variation Low |
| P03B1 | Cylinder 3 Pressure Variation High |
| P03B2 | Cylinder 3 Combustion Performance |
| P03B3 | Cylinder 4 Pressure Sensor Circuit |
| P03B4 | Cylinder 4 Pressure Sensor Circuit Range/Performance |
| P03B5 | Cylinder 4 Pressure Sensor Circuit Low |
| P03B6 | Cylinder 4 Pressure Sensor Circuit High |
| P03B7 | Cylinder 4 Pressure Sensor Circuit Intermittent/Erratic |
| P03B8 | Cylinder 4 Pressure Too Low |
| P03B9 | Cylinder 4 Pressure Too High |
| P03BA | Cylinder 4 Pressure Variation Low |
| P03BB | Cylinder 4 Pressure Variation High |
| P03BC | Cylinder 4 Combustion Performance |
| P03BD | Cylinder 5 Pressure Sensor Circuit |
| P03BE | Cylinder 5 Pressure Sensor Circuit Range/Performance |
| P03BF | Cylinder 5 Pressure Sensor Circuit Low |
| P03C0 | Cylinder 5 Pressure Sensor Circuit High |
| P03C1 | Cylinder 5 Pressure Sensor Circuit Intermittent/Erratic |
| P03C2 | Cylinder 5 Pressure Too Low |
| P03C3 | Cylinder 5 Pressure Too High |
| P03C4 | Cylinder 5 Pressure Variation Low |
| P03C5 | Cylinder 5 Pressure Variation High |
| P03C6 | Cylinder 5 Combustion Performance |
| P03C7 | Cylinder 6 Pressure Sensor Circuit |
| P03C8 | Cylinder 6 Pressure Sensor Circuit Range/Performance |
| P03C9 | Cylinder 6 Pressure Sensor Circuit Low |
| P03CA | Cylinder 6 Pressure Sensor Circuit High |
| P03CB | Cylinder 6 Pressure Sensor Circuit Intermittent/Erratic |
| P03CC | Cylinder 6 Pressure Too Low |
| P03CD | Cylinder 6 Pressure Too High |
| P03CE | Cylinder 6 Pressure Variation Low |
| P03CF | Cylinder 6 Pressure Variation High |
| P03D0 | Cylinder 6 Combustion Performance |
| P03D1 | Cylinder 7 Pressure Sensor Circuit |
| P03D2 | Cylinder 7 Pressure Sensor Circuit Range/Performance |
| P03D3 | Cylinder 7 Pressure Sensor Circuit Low |
| P03D4 | Cylinder 7 Pressure Sensor Circuit High |
| P03D5 | Cylinder 7 Pressure Sensor Circuit Intermittent/Erratic |
| P03D6 | Cylinder 7 Pressure Too Low |
| P03D7 | Cylinder 7 Pressure Too High |
| P03D8 | Cylinder 7 Pressure Variation Low |
| P03D9 | Cylinder 7 Pressure Variation High |
| P03DA | Cylinder 7 Combustion Performance |
| P03DB | Cylinder 8 Pressure Sensor Circuit |
| P03DC | Cylinder 8 Pressure Sensor Circuit Range/Performance |
| P03DD | Cylinder 8 Pressure Sensor Circuit Low |
| P03DE | Cylinder 8 Pressure Sensor Circuit High |
| P03DF | Cylinder 8 Pressure Sensor Circuit Intermittent/Erratic |
| P03E0 | Cylinder 8 Pressure Too Low |
| P03E1 | Cylinder 8 Pressure Too High |
| P03E2 | Cylinder 8 Pressure Variation Low |
| P03E3 | Cylinder 8 Pressure Variation High |
| P03E4 | Cylinder 8 Combustion Performance |
| P03E5 | A Camshaft Position Actuator Position Sensor C Circuit (Bank 1) |
| P03E6 | A Camshaft Position Actuator Position Sensor C Range/Performance (Bank 1) |
| P03E7 | A Camshaft Position Actuator Position Sensor C Circuit Low (Bank 1) |
| P03E8 | A Camshaft Position Actuator Position Sensor C Circuit High (Bank 1) |
| P03E9 | A Camshaft Profile Actuator Position Sensor A Exceeded Learning Limit |
| P03EA | A Camshaft Profile Actuator Position Sensor B Exceeded Learning Limit |
| P03EB | A Camshaft Profile Actuator Position Sensor C Exceeded Learning Limit |
| P03EC | A Camshaft Profile Actuator C Control Circuit/Open (Bank 1) |
| P03ED | A Camshaft Profile Actuator C Control Circuit Low (Bank 1) |
| P03EE | A Camshaft Profile Actuator C Control Circuit High (Bank 1) |
| P03EF | A Camshaft Profile Actuator C Control Performance/Stuck Off (Bank 1) |
| P03F0 | A Camshaft Profile Actuator C Control Stuck On (Bank 1) |
| P03F1 | B Camshaft Profile Actuator C Control Circuit/Open (Bank 1) |
| P03F2 | B Camshaft Profile Actuator C Control Circuit Low (Bank 1) |
| P03F3 | B Camshaft Profile Actuator C Control Circuit High (Bank 1) |
| P03F4 | B Camshaft Profile Actuator C Control Performance/Stuck Off (Bank 1) |
| P03F5 | B Camshaft Profile Actuator C Control Stuck On (Bank 1) |
| P03F6 | B Camshaft Position Actuator Position Sensor C Circuit (Bank 1) |
| P03F7 | B Camshaft Position Actuator Position Sensor C Range/Performance (Bank 1) |
| P03F8 | B Camshaft Position Actuator Position Sensor C Circuit Low (Bank 1) |
| P03F9 | B Camshaft Position Actuator Position Sensor C Circuit High (Bank 1) |
| P03FA | Ignition K Control Signal Circuit/Open |
| P03FB | Ignition K Control Signal Circuit Low |
| P03FC | Ignition K Control Signal Circuit High |
| P03FD | Ignition L Control Signal Circuit/Open |
| P03FE | Ignition L Control Signal Circuit Low |
| P03FF | Ignition L Control Signal Circuit High |
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Official meanings: OBDex (public domain, CC0). Manufacturer codes: dtc-database (MIT license), probable meanings not verified by the manufacturers. The same meaning can vary depending on the model: always have a diagnosis confirmed by a professional.