What does code P253B mean?

Q: What does code P253B mean?

PTO Sense Circuit Range/Performance. P253B indicates that the powertrain control module (PCM) has detected an out-of-range signal from the power take-off (PTO) sense circuit, which monitors whether the PTO system is engaged or disengaged. The computer expects a specific voltage or state from the sensor, but the actual reading falls outside the valid range, triggering the code.

DTC codes / P25xx · Vehicle speed, idle control and auxiliary inputs / P253B

P253BPTO Sense Circuit Range/Performance

P253B indicates that the powertrain control module (PCM) has detected an out-of-range signal from the power take-off (PTO) sense circuit, which monitors whether the PTO system is engaged or disengaged. The computer expects a specific voltage or state from the sensor, but the actual reading falls outside the valid range, triggering the code.

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.

Reading P253B

PPowertrain: engine, transmission and emissions.

2Generic (SAE) code: it means the same thing on every OBD-II vehicle.

5Vehicle speed, idle control and auxiliary inputs.

3BThe exact fault within that area.

Often seen with

See it working

Readiness Monitors and the OBD-II Drive Cycle

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