What does code P2899 mean?

Q: What does code P2899 mean?

Cylinder 3 Ion Current Sense Circuit Range/Performance. P2899 indicates that the engine control module (ECM) has detected an out-of-range or performance fault in the ion current sense circuit for cylinder 3. The ion current sensing system monitors the electrical conductivity of the combustion gases to detect misfire and knock, and this code means the ECM is not receiving a valid signal from that cylinder's sensing circuit.

DTC codes / P28xx · Transmission / P2899

P2899Cylinder 3 Ion Current Sense Circuit Range/Performance

P2899 indicates that the engine control module (ECM) has detected an out-of-range or performance fault in the ion current sense circuit for cylinder 3. The ion current sensing system monitors the electrical conductivity of the combustion gases to detect misfire and knock, and this code means the ECM is not receiving a valid signal from that cylinder's sensing circuit.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaTransmission

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