P06A3/001699

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P06A3/001699 - Sensor Reference Voltage D: Too Low

Possible Symptoms

  • Malfunction Indicator Light (MIL) active
  • Poor engine performance

Possible Causes

  • Low ECM voltage to ECM
  • Faulty wiring on Sensor Reference Voltage "D" Circuit
  • Faulty sensor or component on Sensor Reference Voltage "D" Circuit
  • Faulty ECM

Possible Solutions

  • Verify ALL Powers and Grounds for the ECM
  • Check wiring on Sensor Reference Voltage "D" Circuit
  • Check sensors and components on the Sensor Reference Voltage "D" Circuit
  • Check wiring at the ECM with all components removed from the Circuit to verify the reference voltage is present.
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