What does code P26B2 mean?

Q: What does code P26B2 mean?

Engine Coolant Bypass Valve B Stuck Closed. P26B2 means the powertrain control module (PCM) has commanded the engine coolant bypass valve B to open or change position, but the valve's feedback signal shows it is stuck closed. The PCM detects this by comparing the commanded valve position with the actual position reported by the valve's position sensor, and it sets the code when the two disagree beyond a calibrated threshold for a set time.

DTC codes / P26xx · Computer and output circuits / P26B2

P26B2Engine Coolant Bypass Valve B Stuck Closed

P26B2 means the powertrain control module (PCM) has commanded the engine coolant bypass valve B to open or change position, but the valve's feedback signal shows it is stuck closed. The PCM detects this by comparing the commanded valve position with the actual position reported by the valve's position sensor, and it sets the code when the two disagree beyond a calibrated threshold for a set time.

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.