What does code P26F0 mean?

Q: What does code P26F0 mean?

Starter Relay A Stuck On. P26F0 indicates that the engine control module (ECM) has detected the starter relay control circuit is stuck in the energized position, meaning the relay contacts remain closed even when the ECM is not commanding the starter to run. The ECM monitors the relay control circuit and sets this code when the voltage on the control side does not match the expected state after the command is removed.

DTC codes / P26xx · Computer and output circuits / P26F0

P26F0Starter Relay A Stuck On

P26F0 indicates that the engine control module (ECM) has detected the starter relay control circuit is stuck in the energized position, meaning the relay contacts remain closed even when the ECM is not commanding the starter to run. The ECM monitors the relay control circuit and sets this code when the voltage on the control side does not match the expected state after the command is removed.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaComputer and output circuits

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