What does code P26B4 mean?

Q: What does code P26B4 mean?

Fuel Shutoff Valve A Control Circuit Stuck On. P26B4 indicates that the powertrain control module (PCM) has detected a fault in the control circuit for fuel shutoff valve A, where the circuit is stuck in the energized or 'on' state. The PCM commands the valve to close or open, but the circuit feedback remains constant, indicating a short to power or a failed driver inside the module.

DTC codes / P26xx · Computer and output circuits / P26B4

P26B4Fuel Shutoff Valve A Control Circuit Stuck On

P26B4 indicates that the powertrain control module (PCM) has detected a fault in the control circuit for fuel shutoff valve A, where the circuit is stuck in the energized or 'on' state. The PCM commands the valve to close or open, but the circuit feedback remains constant, indicating a short to power or a failed driver inside the module.

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.