What does code P26BD mean?

Q: What does code P26BD mean?

Engine Coolant Bypass Valve D Control Circuit / Open. P26BD indicates that the powertrain control module (PCM) has detected an open circuit or electrical fault in the control circuit for the engine coolant bypass valve D. The bypass valve directs coolant flow to regulate temperature, and when its control circuit is open, the PCM cannot command the valve to change position, potentially affecting cabin heating and engine warm-up.

DTC codes / P26xx · Computer and output circuits / P26BD

P26BDEngine Coolant Bypass Valve D Control Circuit / Open

P26BD indicates that the powertrain control module (PCM) has detected an open circuit or electrical fault in the control circuit for the engine coolant bypass valve D. The bypass valve directs coolant flow to regulate temperature, and when its control circuit is open, the PCM cannot command the valve to change position, potentially affecting cabin heating and engine warm-up.

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.