From Ross-Tech Wiki
Revision as of 15:09, 3 March 2021 by Jef (talk | contribs)

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.
  • 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.