What does code P26B7 mean?

Q: What does code P26B7 mean?

Engine Coolant Bypass Valve C Control Circuit / Open. P26B7 indicates that the powertrain control module (PCM) has detected an open circuit or control fault on the control circuit for engine coolant bypass valve C, which is used to manage coolant flow for faster warm-up and cabin heating. The PCM monitors the circuit and sets this code when the expected voltage or current is outside the normal range, indicating a break or control issue in the wiring or valve.

DTC codes / P26xx · Computer and output circuits / P26B7

P26B7Engine Coolant Bypass Valve C Control Circuit / Open

P26B7 indicates that the powertrain control module (PCM) has detected an open circuit or control fault on the control circuit for engine coolant bypass valve C, which is used to manage coolant flow for faster warm-up and cabin heating. The PCM monitors the circuit and sets this code when the expected voltage or current is outside the normal range, indicating a break or control issue in the wiring or valve.

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.