What does code P2A52 mean?

DTC codes / P2Axx · Hybrid propulsion / P2A52

P2A52Alternative Fuel Vaporizer A Outlet Temperature Sensor Circuit Low

P2A52 indicates that the powertrain control module has detected a low voltage signal from the outlet temperature sensor of the alternative fuel vaporizer, which is part of a gaseous fuel system such as compressed natural gas or propane. The sensor circuit is reporting a temperature that is unrealistically low or a voltage below the expected range, often due to a short to ground or an open circuit.

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.