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__FORCETOC__
== 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 idling, if [8 degrees(+/-)] or more the engine is considered out of time.
** NAR (North American Region) users can see VW Tech Tip [01-16-05] for exact repair details.
** RoW (Rest of World) users may find TPI 2040216/1 helpful.
* When found in gas models with a remote battery such as the Q7, P0088 may be stored due to voltage drop issues.  TSB 2025746 applies to the NAR market.




==== Special Notes ====
==== Special Notes ====
* North American Market (NAR) specific notes:
 
** When found in 2009 Audi A4, A5 or Q5 with 3.2FSI AVE Engines, please see TSB 15-09-04.
* VW Tech Tip only applies to the 2006 to 2009 Volkswagen Passat, Passat CC and Touareg with 3.6L gasoline engines.
** When found in 2008 and newer VW/Audi 2.0T engine with a timing chain (example; CCTA and CBFA), please see:
 
*** [http://forums.ross-tech.com/showthread.php?4812-Audi-Volkswagen-2-0L-Chain-Drive-P0016-Cam-Crank-correlation-check Audi Volkswagen - 2.0L Chain Drive - P0016 Cam/Crank correlation check]
 
*** The photos in [https://photos.app.goo.gl/y9HK3PuGcKjSwCGJA  this album] are from a faulty spool valve (control valve) in a 2012 Jetta with CBFA 2.0T.
 
*** TT 01-15-08 for information about the intake camshaft, adjuster bridge and spool valve.
 
**** https://static.nhtsa.gov/odi/tsbs/2020/MC-10174989-0001.pdf  NHTSA
[[Category:Fault Codes]]
*** Technical Bulletin 2045454
**** https://static.nhtsa.gov/odi/tsbs/2017/MC-10133347-9999.pdf  NHTSA
*** TSB 15-12-01 or TPI 2028302 for no-start timing chain related problems.
**** https://static.nhtsa.gov/odi/tsbs/2012/SB-10045560-1452.pdf  NHTSA

Revision as of 17:26, 3 March 2021

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 idling, if [8 degrees(+/-)] or more the engine is considered out of time.
    • NAR (North American Region) users can see VW Tech Tip [01-16-05] for exact repair details.
    • RoW (Rest of World) users may find TPI 2040216/1 helpful.
  • When found in gas models with a remote battery such as the Q7, P0088 may be stored due to voltage drop issues. TSB 2025746 applies to the NAR market.


Special Notes

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