What does code P26C0 mean?

Q: What does code P26C0 mean?

Engine Coolant Bypass Valve D Stuck/Open. P26C0 means the engine computer has commanded the coolant bypass valve circuit D to a specific position but the valve's feedback signal shows it stuck or open, so the coolant flow path cannot be controlled as intended. The powertrain control module (PCM) sets this code when the actual valve state does not match the commanded state within a calibrated time window.

DTC codes / P26xx · Computer and output circuits / P26C0

P26C0Engine Coolant Bypass Valve D Stuck/Open

P26C0 means the engine computer has commanded the coolant bypass valve circuit D to a specific position but the valve's feedback signal shows it stuck or open, so the coolant flow path cannot be controlled as intended. The powertrain control module (PCM) sets this code when the actual valve state does not match the commanded state within a calibrated time window.

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.