What does code P26F2 mean?

Q: What does code P26F2 mean?

Starter Relay B Stuck On. P26F2 means the engine control module (ECM) has detected that the starter relay B circuit is stuck in the on position, so the relay's contacts remain closed even when the ECM is not commanding the starter to engage. The ECM monitors the relay control circuit and flags this code when the voltage on the control side does not match the expected state, indicating a short to power or a failed relay.

DTC codes / P26xx · Computer and output circuits / P26F2

P26F2Starter Relay B Stuck On

P26F2 means the engine control module (ECM) has detected that the starter relay B circuit is stuck in the on position, so the relay's contacts remain closed even when the ECM is not commanding the starter to engage. The ECM monitors the relay control circuit and flags this code when the voltage on the control side does not match the expected state, indicating a short to power or a failed relay.

SystemPowertrain

Code typeGeneric (all makes)

SeverityHigh

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.