P044C OBD II Trouble Code Exhaust Gas Recirculation Sensor C Circuit Low

Diagnostic, repair, and background information on the P044C DTC code which has to do with the EGR Circuit Sensor C. Also includes links to relevant forum topics on the code.

Symptoms of P044C OBD II Trouble Code

  • MIL (Malfunction Indicator Lamp) illumination

Common Causes of P044C OBD II Trouble Code

  • 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