P06A3/001699

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.

Special Notes

• See this Ross-Tech forum post, when found in vehicles with the CBEA/CJAA 2.0l CR-TDI engines
  • https://forums.ross-tech.com/index.php?threads/33187/#post-280391