Difference between revisions of "User:Jef"

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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 ====
* Faulty High Pressure Fuel Pump
* Engine  camshaft(s) out of time
==== Possible Solutions ====
* Replace faulty High Pressure Fuel Pump
* Correct camshaft timing issues
==== Special Notes ====
* NAR (North American Region) VW Tech Tips 01-16-05 and 01-20-05 for vehicles with the 3.6L engine has information testing for possible timing chain issues.
** https://static.nhtsa.gov/odi/tsbs/2016/MC-10096053-0699.pdf  NHTSA
** https://static.nhtsa.gov/odi/tsbs/2020/MC-10180093-0001.pdf  NHTSA
*** Check camshafts phase adjustments, if [8 degrees(+/-)] or more the engine is considered out of time.
**** MVB group [208] and [209] with engine idling for non UDS ECMs
**** IDE00182 and IDE00184 with engine idling for UDS ECMs
* 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.
[[Category:Fault Codes]]

Latest revision as of 08:47, 28 April 2022