P053F00, P008700, P029900, & P125000. Please help.

[Audi-Quattro]

P053F00: Passive/Sporadic : Cold Fuel Pressure Performance
P008700: Passive/Sporadic : Fuel Rail/System Pressure - Too Low
P029900: Passive/Sporadic : Turbo/Super Charger Underboost
P125000: Passive/Sporadic : Fuel Level Low (except I was literally full tank)


Has anyone else experienced this issue with throwing these 4 codes at once? The last time i pulled these codes I was accompanied with 4 more codes (so 8 total) which were misfire in cylinder #1,#2,#3,#4.

So I thought it was just a misread for the computer and cleared it and moved on, now about 2 weeks later im here with these codes. When we checked the running fuel pressure of the car it read at ~50.00units at idle when it should be ~70.00units. When we revved the car in neutral the pressure would fluctuate downwards. My only concern is that its my daily driver and I drive 40mi a day highway and prob another 10 city. Should I bring it to my indy or DIY time?

[o1turbo30v]

Start small, replace your fuel filter. Turbo underboost usually means loose wastegate actuator rod, or new turbo time. Fuel level low could be the sensor in the tank.

[J4EZ]

Start small, replace your fuel filter. Turbo underboost usually means loose wastegate actuator rod, or new turbo time. Fuel level low could be the sensor in the tank.

dont want to worry you, but had a turbo undersboost, and Audi told me the 1.8's would smoke my 2.0. The turbo needed to be replaced, for 3 grand. Luckily the dealership I bought it from covered the costs, due to them not running proper texts.

[ak11214]

isnt there is an extended warranty for turbo?

[Dirtyaudi]

isnt there is an extended warranty for turbo?

I want to say it falls under 8/80 emission warranty, I can def' check if you would like.

[Audi-Quattro]

Thanks for the help, ill keep the tread updated as much as I can. For now I just put some fuel cleaner for the engine and injectors. Going to look into it on Tuesday 6/19 at the local shop. On the bright side ive gone a full day without pulling a CEL, but oil on the otherhand.... every 600mi. But im going to build the engine soon anyways.

[Audi-Quattro]

UPDATE: So I got the news from my mechanic, so what I need is a high and low pressure fuel pump, and he said the turbo wastegate is rattling around and checked the overall composition of the turbo and lets just say it didnt pass his test with flying colors.... great way to start the week.

[S4'ed]

I just had a P0087 on a 2012 2.0T with 88,000 miles : the High Pressure Fuel Pump was the problem. Before changing the HPFP, the "Requested" Fuel Pressure was 50Bar at idle, the "Actual" was 7Bar. (Measuring Block 106).

I first tried a new low Pressure Fuel Pump Control Module, and then a new Fuel Pressure Sensor (on the injector fuel rail) and they did not solved my P0087 problem, then I installed the new HPFP.

Replace the HPFP first, before you replace the Low Pressure Fuel pump, or anything else.

Ask your Audi Dealer if you have an extended warrantee on your VIN, for the HPFP, when accompanied by a P0087 DTC. My VW had the extended warrantee, out to 120,000 miles.

[awdconnor]

I just got the p0299 code...
I'm getting a brand new turbo under warranty


Sent from my Golf.

[Audi-Quattro]

@S4'ed , thanks for the heads up/advice , but when I take it to audi im just gonna have my fingers crossed that they replace it with the oil consumption issue and turbo warranty. If not, ill be taking it back to the shop to have he HPFP installed. Im actually currently playing the waiting game for OEM parts. I saved all my other parts except the downpipe and im searching the marketplace hourly to find one, im even going to start calling scrapyards/pick n pull yards to find one.