What does code P1303 mean?

Q: What does code P1303 mean?

Cylinder 3 Misfire. P1303 on a Honda means the powertrain control module has detected a misfire specifically on cylinder 3, typically by monitoring crankshaft speed fluctuations that indicate that cylinder is not contributing power evenly. The code is stored when the misfire count for cylinder 3 exceeds a calibrated threshold, which can range from a single event to a continuous failure depending on the severity.

DTC codes / Honda codes / P1303

P1303 · HondaCylinder 3 Misfire

P1303 on a Honda means the powertrain control module has detected a misfire specifically on cylinder 3, typically by monitoring crankshaft speed fluctuations that indicate that cylinder is not contributing power evenly. The code is stored when the misfire count for cylinder 3 exceeds a calibrated threshold, which can range from a single event to a continuous failure depending on the severity.

SystemPowertrain

Code typeHonda specific

SeverityHigh

Fix difficultyIntermediate

AreaIgnition system and misfire

Guidance is general and written for Honda vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.