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Home >> Ford >> 2022 >> Transit Connect Titanium, Gas/Ethanol >> Repair and Diagnosis >> External Pages >> Different car >> Section 758 (Engine Controls - Powertrain DTC Descriptions (Except Diesel & Hybrid) - DTC P023A - P060D) >> DTC P0406 - EGR Sensor A Circuit High

DTC P0406 - EGR Sensor A Circuit High

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DTC DESCRIPTION P0406 - EGR SENSOR A CIRCUIT HIGH

Description:  The exhaust gas recirculation (EGR) monitor checks the EGR valve position sensor signal to the PCM for high voltage. This DTC sets when the average voltage to the PCM exceeds the maximum calibrated value.
Possible Causes: 
  • Damaged EGR valve
  • VREF circuit open
  • SIGRTN circuit open
  • EGRVP circuit open
  • EGRVP circuit short to voltage
  • EGRVP circuit short to ground
Diagnostic Aids:   
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST KD .