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P0403 - Exhaust Gas RECIRCULATION (EGR) Control Circuit/Open

P0403 - EXHAUST GAS RECIRCULATION (EGR) CONTROL CIRCUIT/OPEN

Description:  The electric EGR (EEGR) system is continuously monitored to check the four EEGR motor coils, circuits, and the PCM for opens, shorts to voltage and ground. If a concern is detected, the EEGR system is disabled and additional monitoring is suspended for the remainder of the drive until the next drive cycle.
Possible Causes: 
  • EEGR stepper motor windings open
  • EEGR connector not seated correctly
  • EGRMC circuit open
  • EGRMC circuit short to voltage
  • EGRMC circuit short to ground
  • Damaged PCM
Diagnostic Aids: 
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to Pinpoint Test KD .
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