Installed a spool helix Hpfp on my n54 335i. The first drive I kept throwing 29DC codes and getting random low Hpfp pressure. If I cleared it it would go back to normal but eventually just stayed at like 300 psi unless I did a adapt reset. I put a new Hpfp on it certain that’s the issue and after 20 mins it’s doing it again. Anyone ever had an issue like this?? I do my own tuning as well could it just be triggering a limit or something?
Helix and 2nd new Hpfp throwing code 29DC and limp mode!
- Thread starter MilesG
- Start date
