What does code P25A5 mean?

Q: What does code P25A5 mean?

Fuel Mode Select Switch Performance. P25A5 indicates that the powertrain control module (PCM) has detected an implausible or out-of-range signal from the fuel mode select switch, which is used on some vehicles to choose between different fuel maps or driving modes. The PCM compares the switch input against expected values and sets this code when the voltage or resistance does not match any valid selection.

DTC codes / P25xx · Vehicle speed, idle control and auxiliary inputs / P25A5

P25A5Fuel Mode Select Switch Performance

P25A5 indicates that the powertrain control module (PCM) has detected an implausible or out-of-range signal from the fuel mode select switch, which is used on some vehicles to choose between different fuel maps or driving modes. The PCM compares the switch input against expected values and sets this code when the voltage or resistance does not match any valid selection.

SystemPowertrain

Code typeGeneric (all makes)

SeverityLow

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.