17036/P0652/001618

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).
• 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.