[Eriksson042887]

Hey guys, after driving for a hour or so i get a service engine light, codes are below, i have logs attached, true fbo on stock flash.

29EO - DME: Mixture control.
29E1 - DME: Mixture control 2.
ZAAF - DME: Fuel pump, plausibility.
2C7B - DME: Oxygen sensor after catalytic converter: Signal.

I have had ZAAF for over 4 years since i bought the car.
I also have cat conversion on both banks because i have downpipes.
I hope its a faulty oxygen sensor

Idling / https://datazap.me/u/eriksson/idling?log=0&data=3-21

Cruising / https://datazap.me/u/eriksson/cruising?log=0&data=3-21

Light acceleration / https://datazap.me/u/eriksson/light-...og=0&data=3-21

[lekang95]

Look like your Low pressure fuel pump struggling.

[Eriksson042887]

Originally Posted by lekang95

Look like your Low pressure fuel pump struggling.

It’s been since I got the car, always worked fine though. Won’t replace till I actually need it.

[konstat]

Originally Posted by Eriksson042887

It’s been since I got the car, always worked fine though. Won’t replace till I actually need it.

The nominal operating pressure for the lpfp is 72 psi. Since you’re at 60 psi under light throttle you do have a fueling issue. Your rail pressure is also very low it really shouldn’t go below 1900psi at high rpm on a fbo car. In lower rpm’s it should be upwards of 2700 psi. Your peak rail pressure is 1700psi, which also indicates a problem.

Based on the above I expect your AFRs to be lean and from your logs you’re hovering around high 14s in one bank and 15s in another. I think fueling is causing the codes you’re seeing.

Your STFTs are also high which means the DME is trying to add fuel to lower your AFRs but it’s not able to without proper fueling