OBD-II code · Powertrain (generic)

P01B0 Alternative Fuel Tank A Level Sensor Range/Performance

Alt fuel tank A level sensor reading implausible.

Is it safe to drive with P01B0?

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

Common causes

  • Most likelySensor reading drifted
  • Less likelySensor element aged beyond calibration window
  • Less likelySensor mounting loose - signal damping

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 Level Sensor

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