What does code P2A72 mean?

DTC codes / P2Axx · Hybrid propulsion / P2A72

P2A72Alternative Fuel Hydraulic Fuel Pump Select Valve Control Circuit Low

P2A72 indicates that the powertrain control module (PCM) has detected a low-voltage condition on the control circuit for the hydraulic fuel pump select valve in an alternative fuel system. This valve directs hydraulic pressure to the appropriate fuel pump, and a low circuit signal means the PCM cannot reliably command the valve, potentially preventing the engine from running on the intended fuel.

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.