What does code P2A55 mean?

DTC codes / P2Axx · Hybrid propulsion / P2A55

P2A55Alternative Fuel Vaporizer B Outlet Temperature Sensor Circuit

P2A55 indicates that the powertrain control module has detected an abnormal signal from the outlet temperature sensor of the alternative fuel vaporizer, designated as circuit B. The computer compares the sensor's voltage or resistance against expected values for the current operating conditions and flags the circuit when the reading falls outside the calibrated 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.