OBD-II code · Powertrain (generic, extended)

P2A62 Alternative Fuel Tank B Level Sensor Circuit High

Voltage on the level sensor signal line of alternative fuel tank B is above the expected window. Wire shorted to B+ or sensor open.

Is it safe to drive with P2A62?

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

Common causes

  • Most likelySignal wire shorted to B+
  • PossibleOpen level sensor
  • Less likelyConnector pins corroded - high contact resistance

Repair at a glance

Difficulty
Medium
DIY friendly
Best left to a mechanic
Typical labour
0.5–3 h
Emissions test
Usually unaffected
Parts involved
Alt Fuel Tank B Level Sensor, Wiring Harness, Afcm

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