What does code P2289 mean?

Q: What does code P2289 mean?

Injector Control Pressure Too High - Engine Off. P2289 means the engine control module (ECM) detected that the fuel injector control pressure is higher than expected while the engine is off, which points to a pressure regulation or sensor fault rather than a running injector problem. The ECM compares the injector control pressure sensor reading against a modeled value at key-on, engine-off, and flags the code when the signal sits above the calibrated threshold.

DTC codes / P22xx · Fuel and air metering (injector circuits) / P2289

P2289Injector Control Pressure Too High - Engine Off

P2289 means the engine control module (ECM) detected that the fuel injector control pressure is higher than expected while the engine is off, which points to a pressure regulation or sensor fault rather than a running injector problem. The ECM compares the injector control pressure sensor reading against a modeled value at key-on, engine-off, and flags the code when the signal sits above the calibrated threshold.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

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.