What does code P254B mean?

Q: What does code P254B mean?

PTO Speed Selector Sensor/Switch 1 Range/Performance. P254B indicates that the powertrain control module (PCM) has detected an out-of-range or performance fault in the signal from the power take-off (PTO) speed selector sensor or switch number 1. The PCM expects a specific voltage or resistance pattern from this input when the PTO system is engaged, and the observed signal does not match the expected value for the current operating conditions.

DTC codes / P25xx · Vehicle speed, idle control and auxiliary inputs / P254B

P254BPTO Speed Selector Sensor/Switch 1 Range/Performance

P254B indicates that the powertrain control module (PCM) has detected an out-of-range or performance fault in the signal from the power take-off (PTO) speed selector sensor or switch number 1. The PCM expects a specific voltage or resistance pattern from this input when the PTO system is engaged, and the observed signal does not match the expected value for the current operating conditions.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaVehicle speed, idle control and auxiliary inputs

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.