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DTC codes / P2Axx · Hybrid propulsion / P2A53

P2A53Alternative Fuel Vaporizer A Outlet Temperature Sensor Circuit High

P2A53 means the powertrain control module (PCM) has detected an abnormally high voltage on the signal circuit of the outlet temperature sensor for alternative fuel vaporizer A. The sensor is responsible for reporting the temperature of the fuel vapor leaving the vaporizer, and a high voltage typically indicates an open circuit, a short to voltage, or a sensor that has failed in a way that drives the signal above the normal range.

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