View source for 17433/P1025/004133

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== P1025 - Fuel Pressure Regulation Valve (N276): Mechanical Failure ==

==== Possible Symptoms ====

* Malfunction Indicator Light (MIL) ON
* High pitched whining noise from engine when idling.
* ECM may also have stored in memory, P0088 - Fuel Rail/System Pressure: Too High.

==== Possible Causes ====

* When found in 2006 to 2009 Volkswagen Passat, Passat CC and Touareg with 3.6L gasoline engines it is possible the HPFP (High Pressure Fuel Pump) / camshafts are out of time.



==== Possible Solutions ====

* When found in 2006 to 2009 Volkswagen Passat, Passat CC and Touareg with 3.6L gasoline engines:
** Check MVB group [208] and [209] with engine running, if greater than [8 degrees(+/-)] the camshafts and HPFP are out of time
** See VW Tech Tip [01-16-05] for exact repair details.

==== Special Notes ====

* VW Tech Tip only applies to the 2006 to 2009 Volkswagen Passat, Passat CC and Touareg with 3.6L gasoline engines.




[[Category:Fault Codes]]