What does code P280B mean?

Q: What does code P280B mean?

Transmission Range Sensor B Circuit Not Learned. P280B means the transmission control module (TCM) has not successfully completed the learn or adaptation procedure for the 'B' range sensor circuit, so it cannot trust the reported gear selector position. The computer is not seeing a simple open or short; it is flagging that the calibration values for that sensor channel are missing or invalid.

DTC codes / P28xx · Transmission / P280B

P280BTransmission Range Sensor B Circuit Not Learned

P280B means the transmission control module (TCM) has not successfully completed the learn or adaptation procedure for the 'B' range sensor circuit, so it cannot trust the reported gear selector position. The computer is not seeing a simple open or short; it is flagging that the calibration values for that sensor channel are missing or invalid.

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.