OBD-II code · Powertrain (generic, extended)

P2A59 Alternative Fuel Vaporizer B Outlet Temperature Sensor Circuit Intermittent/Erratic

The outlet temperature sensor signal of alternative fuel vaporizer B drops out or jumps intermittently. Loose connector or noisy ground.

Is it safe to drive with P2A59?

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

Common causes

  • Most likelySensor connector not seated
  • PossibleNoisy ground reference
  • Less likelyConnector with intermittent contact under vibration

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 B Outlet Temp Sensor, Wiring Harness, Afcm

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