What does code P288B mean?

Q: What does code P288B mean?

Park Lock/Pawl Actuator Circuit Performance. P288B indicates that the powertrain control module (PCM) has detected a performance fault in the park lock/pawl actuator circuit, which is responsible for mechanically locking the transmission output shaft when the vehicle is placed in Park. The PCM monitors the actuator's electrical current and expected response, and it sets this code when the circuit's behavior falls outside the manufacturer's specified range during commanded actuation or release.

DTC codes / P28xx · Transmission / P288B

P288BPark Lock/Pawl Actuator Circuit Performance

P288B indicates that the powertrain control module (PCM) has detected a performance fault in the park lock/pawl actuator circuit, which is responsible for mechanically locking the transmission output shaft when the vehicle is placed in Park. The PCM monitors the actuator's electrical current and expected response, and it sets this code when the circuit's behavior falls outside the manufacturer's specified range during commanded actuation or release.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

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.