OBD-II code · Powertrain (generic, extended)

P2A5B Alternative Fuel Vaporizer C Outlet Temperature Sensor Range/Performance

The outlet temperature signal of alternative fuel vaporizer C does not match plausibility checks against fuel rail temperature and engine coolant temperature. Sensor drift.

Is it safe to drive with P2A5B?

Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.

Common causes

  • Most likelySensor characteristic drifted
  • PossibleSensor mounting displaced from fluid path
  • Less likelySensor element aged beyond calibration window

Repair at a glance

Difficulty
Easy
DIY friendly
Often, with basic tools
Typical labour
0.3–1.5 h
Emissions test
Likely to fail
Parts involved
Alt Fuel Vaporizer C Outlet Temp Sensor, Wiring Harness, Afcm

Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.