What does code P28EA mean?

Q: What does code P28EA mean?

Shift Motor Position Sensor Circuit Range/Performance. P28EA indicates that the powertrain control module (PCM) has detected an abnormal signal from the shift motor position sensor, which reports the physical position of the shift motor or actuator in systems such as transfer cases or automated manual transmissions. The PCM compares the sensor voltage against expected ranges for the commanded gear and sets this code when the signal falls outside those limits or behaves erratically.

DTC codes / P28xx · Transmission / P28EA

P28EAShift Motor Position Sensor Circuit Range/Performance

P28EA indicates that the powertrain control module (PCM) has detected an abnormal signal from the shift motor position sensor, which reports the physical position of the shift motor or actuator in systems such as transfer cases or automated manual transmissions. The PCM compares the sensor voltage against expected ranges for the commanded gear and sets this code when the signal falls outside those limits or behaves erratically.

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.