17036/P0652/001618

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17036/P0652/001618 - Sensor Reference Voltage B: Too Low

Possible Causes

  • Wiring/Connectors from/to Intake Manifold Pressure Sensor (G31) faulty
  • Intake Manifold Pressure Sensor (G31) faulty
  • Engine Control Module faulty

Possible Solutions

  • Check Wiring/Connectors from/to Intake Manifold Pressure Sensor (G31)
  • Check/Replace Intake Manifold Pressure Sensor (G31)
  • Replace Engine Control Module

Special Notes

  • When found in 1.9l TDI (BEW):
    • Check Atmospheric Pressure (MVB 010.2) and Intake Manifold Pressure Sensor (MVB 010.3). Compare both Values with Engine OFF, the Tolerance should be +/- 50 mbar.
    • Check Variable Nozzle Turbocharger (VNT). Specifically, check the electronic actuator position sensor G500 , including unplugging it for testing.
  • When found in other engines:
    • Check the factory repair manual since this fault can point to problems with several different sensors.
    • Specifically in the BLB engine, faulty MAF wiring can trigger it.
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