What does code P2803 mean?

Q: What does code P2803 mean?

Transmission Range Sensor B Circuit High. P2803 means the transmission control module (TCM) has detected a high voltage condition on the signal circuit for Transmission Range Sensor B, which is often the output speed or range confirmation sensor inside the transmission. The TCM expects a voltage within a specific window, and a reading above that threshold for a set time triggers this code.

DTC codes / P28xx · Transmission / P2803

P2803Transmission Range Sensor B Circuit High

P2803 means the transmission control module (TCM) has detected a high voltage condition on the signal circuit for Transmission Range Sensor B, which is often the output speed or range confirmation sensor inside the transmission. The TCM expects a voltage within a specific window, and a reading above that threshold for a set time triggers this code.

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.