What does code P26C1 mean?

Q: What does code P26C1 mean?

Engine Coolant Bypass Valve D Range/Performance. P26C1 indicates that the powertrain control module (PCM) has detected an out-of-range or performance fault in the engine coolant bypass valve circuit, specifically for the 'D' range or circuit. The PCM commands the bypass valve to route coolant away from the radiator during warm-up, and it monitors the valve's response; when the actual position or electrical feedback does not match the commanded state within a calibrated time, this code is stored.

DTC codes / P26xx · Computer and output circuits / P26C1

P26C1Engine Coolant Bypass Valve D Range/Performance

P26C1 indicates that the powertrain control module (PCM) has detected an out-of-range or performance fault in the engine coolant bypass valve circuit, specifically for the 'D' range or circuit. The PCM commands the bypass valve to route coolant away from the radiator during warm-up, and it monitors the valve's response; when the actual position or electrical feedback does not match the commanded state within a calibrated time, this code is stored.

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.