What does code P25A6 mean?

Q: What does code P25A6 mean?

Fuel Mode Select Switch Circuit Low. P25A6 indicates that the powertrain control module (PCM) has detected a low-voltage condition on the fuel mode select switch circuit, which is used to tell the computer which fuel map or mode the driver has selected. The PCM expects a certain voltage range on the signal circuit and sets this code when the voltage stays below the calibrated threshold for a set time.

DTC codes / P25xx · Vehicle speed, idle control and auxiliary inputs / P25A6

P25A6Fuel Mode Select Switch Circuit Low

P25A6 indicates that the powertrain control module (PCM) has detected a low-voltage condition on the fuel mode select switch circuit, which is used to tell the computer which fuel map or mode the driver has selected. The PCM expects a certain voltage range on the signal circuit and sets this code when the voltage stays below the calibrated threshold for a set time.

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.