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OBD-II Generic Powertrain DTCs
(Diagnostic Trouble Codes P0400-P0499)


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  • P0403: Exhaust gas recirculation (EGR) control circuit malfunction
  • P0410: Secondary air injection system malfunction
  • P0411: Secondary air injection system incorrect flow detected
  • P0420: Catalyst system efficiency below threshold (Bank 1)
  • P0421: Catalyst system efficiency below threshold (Bank 1), slow response
  • P0430: Catalyst system efficiency below threshold (Bank 2)
  • P0431: Catalyst system efficiency below threshold (Bank 2), slow response
  • P0440: Evaporative emission control system leak detected
  • P0441: Evaporative emission control system incorrect purge flow
  • P0442: Evaporative emission control system small leak detected
  • P0443: Evaporative emission control system purge control valve circuit malfunction
  • P0444: Evaporative emission control system purge control valve circuit open
  • P0445: Evaporative emission control system purge control valve circuit shorted
  • P0455: Evaporative emission control system large leak detected
  • P0456: Evaporative emission control system very small leak detected
  • P0460: Fuel level sensor circuit malfunction
  • P0461: Fuel level sensor range/performance problem
  • P0462: Fuel level sensor low input
  • P0463: Fuel level sensor high input
  • P0471: Exhaust pressure sensor circuit malfunction
  • P0480: Cooling fan control circuit malfunction
  • P0481: Cooling fan 1 control circuit malfunction
  • P0482: Cooling fan 2 control circuit malfunction
  • P0496: Cooling fan control circuit high input
  • P0497: Cooling fan control circuit low input
  • P0498: Cooling fan control circuit intermittent

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