View source for 17036/P0652/001618

__FORCETOC__
== 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.

[[Category:Fault Codes]]