Turbo and boost control fault codes

26 documented codes across 157 real diagnostics.

Underboost/overboost, wastegate and variable-geometry actuators, boost pressure sensing. P0299 (underboost) is the single most common fault code in the whole dataset.

Ranked by how often we actually see them

  • P0299, Turbocharger underboost condition
  • P2563, Turbocharger boost control position sensor circuit range/performance
  • P2263, Turbocharger boost system performance
  • P2279, Intake air system leak
  • P0234, Turbocharger overboost condition
  • P00BC, Mass air flow sensor A circuit range/performance, air flow too low
  • P0245, Turbocharger wastegate solenoid A low
  • P0238, Turbocharger boost sensor A circuit high
  • P0236, Turbocharger boost sensor A circuit range/performance
  • P2262, Turbocharger boost pressure not detected, mechanical
  • P00BD, Mass air flow sensor A circuit range/performance, air flow too high
  • P0243, Turbocharger wastegate solenoid A
  • P2562, Turbocharger boost control position sensor circuit
  • P0045, Turbocharger boost control solenoid circuit open
  • P0033, Turbocharger bypass valve control circuit
  • P0049, Turbocharger turbine overspeed
  • P226D, not individually documented
  • P0047, Turbocharger boost control solenoid circuit low
  • P2566, Turbocharger boost control position sensor circuit high
  • P0037, O2 sensor heater control circuit low, bank 1 sensor 2
  • P0244, Turbocharger wastegate solenoid A range/performance
  • P00BE, not individually documented
  • P003A, Turbocharger boost control position sensor circuit range/performance
  • P0040, O2 sensor signals swapped, bank 1 sensor 1 / bank 2 sensor 1
  • P0048, Turbocharger boost control solenoid circuit high
  • P2270, O2 sensor signal biased or stuck lean, bank 1 sensor 2