What does code P2A31 mean?

Q: What does code P2A31 mean?

Alternative Fuel Tank Shutoff Valve E Control Circuit High. P2A31 indicates that the powertrain control module has detected a high-voltage condition on the control circuit for the alternative fuel tank shutoff valve 'E', meaning the circuit is showing voltage above the expected range when the valve should be commanded off or at a lower duty cycle. This typically points to a short to voltage, an open ground path, or a faulty valve or driver, and the module may disable the valve or set a fail-safe strategy.

DTC codes / P2Axx · Hybrid propulsion / P2A31

P2A31Alternative Fuel Tank Shutoff Valve E Control Circuit High

P2A31 indicates that the powertrain control module has detected a high-voltage condition on the control circuit for the alternative fuel tank shutoff valve 'E', meaning the circuit is showing voltage above the expected range when the valve should be commanded off or at a lower duty cycle. This typically points to a short to voltage, an open ground path, or a faulty valve or driver, and the module may disable the valve or set a fail-safe strategy.

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.