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  1. GENERIC P0408

P0408 / GENERIC

Exhaust Gas Recirculation Sensor B Circuit High

Notes:

Possible causes:
  • Short to ground in EGR signal or Reference circuits
  • Short to voltage in EGR ground or signal circuits
  • Bad EGR valve
  • Bad PCM wiring issues due to chafing or loose terminals

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NOTE: Results from this database are the beginning of the diagnostic process, further investigation should be performed to confirm results before you begin repairs.