What does code P02A1 mean?

Q: What does code P02A1 mean?

Cylinder 2 - Injector Leaking. P02A1 indicates that the engine control module has detected a leaking condition in cylinder 2's fuel injector, typically by monitoring fuel trim or cylinder balance and finding that cylinder 2 is receiving excess fuel. The computer sets this code when the injector fails to fully close, allowing fuel to drip into the cylinder even when it should be shut off.

DTC codes / P02xx · Fuel and air metering (injector circuits) / P02A1

P02A1Cylinder 2 - Injector Leaking

P02A1 indicates that the engine control module has detected a leaking condition in cylinder 2's fuel injector, typically by monitoring fuel trim or cylinder balance and finding that cylinder 2 is receiving excess fuel. The computer sets this code when the injector fails to fully close, allowing fuel to drip into the cylinder even when it should be shut off.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering (injector circuits)

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