17035/P0651/001617

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17035/P0651/001617 - Sensor Reference Voltage "B" Circuit/Open

Possible Symptoms

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

Possible Causes

  • Faulty wiring on Sensor Reference Voltage "B" Circuit
  • Faulty sensor or component on Sensor Reference Voltage "B" Circuit
  • Faulty ECM

Possible Solutions

  • Check wiring on Sensor Reference Voltage "B" Circuit
  • Check sensors and components on the Sensor Reference Voltage "B" Circuit
  • Check wiring at the ECM with all components removed from the Circuit to verify the reference voltage is present.
    • If the ECM is NOT producing the needed voltage and all powers/grounds going to it are OK, replace ECM.

Special Notes

  • When found in any Golf (1K/5K/AJ) based VW model with a 2nd Gen (2008.5 - 2014 model year) timing chain driven 2.0TSI Gasoline engine, the Sensor Reference Voltage "B" Circuit should be found on terminal T60/29 which powers G40, G247 and G609 (when installed).
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