User:Jef: Difference between revisions
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* Correct camshaft timing issues | * Correct camshaft timing issues | ||
* 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. | * 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. | ||
| Line 34: | Line 30: | ||
**** MVB group [208] and [209] with engine idling for non UDS ECMs | **** MVB group [208] and [209] with engine idling for non UDS ECMs | ||
**** IDE00182 and IDE00184 with engine idling for 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]] | [[Category:Fault Codes]] | ||
Revision as of 18:37, 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
- Faulty High Pressure Fuel Pump
- Engine camshaft(s) out of time
Possible Solutions
- Replace faulty High Pressure Fuel Pump
- Correct camshaft timing issues
- 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
- NAR (North American Region) VW Tech Tip 01-20-05 for 2006 to 2021 vehicles with the 3.6L engine has information on timing issues due to timing chain issues.
- 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
- Check camshafts phase adjustments, if [8 degrees(+/-)] or more the engine is considered out of time.
- https://static.nhtsa.gov/odi/tsbs/2020/MC-10180093-0001.pdf NHTSA
- 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.