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DTC codes / P2Axx · Hybrid propulsion / P2A81

P2A81Alternative Fuel Pump A Compression Stroke Valve Control Circuit Low

P2A81 indicates that the powertrain control module has detected a low-voltage condition on the control circuit for the compression stroke valve of alternative fuel pump A. This valve is used in some alternative fuel systems to manage pump operation, and a low circuit voltage means the PCM cannot reliably command the valve, which may prevent the pump from building pressure or delivering fuel correctly.

SystemPowertrain
Code typeGeneric (all makes)
SeverityMedium
Fix difficultyProfessional
AreaHybrid propulsion
Running on fumes Free guides aren't free to make. Top up the tank. Any amount, one time. Fuel the Garage