P012B OBD II Trouble Code Turbo/Supercharger Inlet Pressure Sensor Circuit Range Performance

How to quickly diagnose, repair, and info on symptoms and causes of a P012B code which relates to the turbo/supercharger inlet pressure sensor circuit which is out of range or has a performance problem.

Symptoms of P012B OBD II Trouble Code

  • Vehicle enters limp mode (Fail safe mode)
  • Engine noises
  • Poor performance
  • Engine misfiring
  • Stalling
  • Poor fuel mileage

Common Causes of P012B OBD II Trouble Code

  • Defective Turbo/supercharger inlet pressure sensor
  • Broken or damaged wiring harness
  • Problem within general electrical system
  • ECM issue
  • Pin/connector problem. (i.e. corrosion, overheating etc.)
  • Clogged or damaged air filter