What does code P26AD mean?

Q: What does code P26AD mean?

Engine Coolant Bypass Valve B Control Circuit Low. P26AD indicates that the powertrain control module (PCM) has detected a low-voltage condition on the control circuit for the engine coolant bypass valve B. This valve manages coolant flow to help the engine reach operating temperature quickly and maintain stable temperatures, and a low circuit typically means a short to ground or an open in the wiring or the valve's internal coil.

DTC codes / P26xx · Computer and output circuits / P26AD

P26ADEngine Coolant Bypass Valve B Control Circuit Low

P26AD indicates that the powertrain control module (PCM) has detected a low-voltage condition on the control circuit for the engine coolant bypass valve B. This valve manages coolant flow to help the engine reach operating temperature quickly and maintain stable temperatures, and a low circuit typically means a short to ground or an open in the wiring or the valve's internal coil.

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.