What does code P25C0 mean?

Q: What does code P25C0 mean?

Alternative Fuel Disable Control Circuit Low. P25C0 indicates that the powertrain control module has detected a low-voltage condition on the alternative fuel disable control circuit, which is used to shut off the supply of alternative fuel such as compressed natural gas or propane. The computer expects to see a specific voltage on this circuit when the disable function is commanded, and a low reading tells it that the circuit is shorted to ground or that the control device is drawing excessive current.

DTC codes / P25xx · Vehicle speed, idle control and auxiliary inputs / P25C0

P25C0Alternative Fuel Disable Control Circuit Low

P25C0 indicates that the powertrain control module has detected a low-voltage condition on the alternative fuel disable control circuit, which is used to shut off the supply of alternative fuel such as compressed natural gas or propane. The computer expects to see a specific voltage on this circuit when the disable function is commanded, and a low reading tells it that the circuit is shorted to ground or that the control device is drawing excessive current.

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.