What does code P26A9 mean?

DTC codes / P26xx · Computer and output circuits / P26A9

P26A9Engine Coolant Bypass Valve A Position Sensor Stop/Minimum Stop Performance

P26A9 indicates that the engine control module has detected a performance problem with the stop or minimum stop position of the engine coolant bypass valve position sensor A. The computer expects the sensor signal to reach a specific minimum value when the valve is commanded to its fully closed or resting position, and the signal does not match that expectation.

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.