What does code P2A91 mean?

Q: What does code P2A91 mean?

Alternative Fuel Tank Select Valve A Control Circuit/Open. P2A91 indicates that the powertrain control module (PCM) has detected an open circuit or excessive resistance in the control circuit for the alternative fuel tank select valve 'A'. This valve directs alternative fuel from the selected tank, and when its circuit is open, the PCM cannot command the valve to open or close, potentially disabling alternative fuel operation.

DTC codes / P2Axx · Hybrid propulsion / P2A91

P2A91Alternative Fuel Tank Select Valve A Control Circuit/Open

P2A91 indicates that the powertrain control module (PCM) has detected an open circuit or excessive resistance in the control circuit for the alternative fuel tank select valve 'A'. This valve directs alternative fuel from the selected tank, and when its circuit is open, the PCM cannot command the valve to open or close, potentially disabling alternative fuel operation.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaHybrid propulsion

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.