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DTC codes / P2Axx · Hybrid propulsion / P2A57

P2A57Alternative Fuel Vaporizer B Outlet Temperature Sensor Circuit Low

P2A57 means the powertrain control module (PCM) sees a voltage signal from the alternative fuel vaporizer B outlet temperature sensor that is lower than the expected range for the current operating conditions. The sensor circuit is reporting a low voltage, which usually indicates a short to ground, an open sensor ground, or a sensor that has failed in a way that pulls the signal low.

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.

Running on fumes Free guides aren't free to make. Top up the tank. Any amount, one time. Fuel the Garage