[e69 DRIVER]

DME active codes
28A0 - Air mass system, plausibility: calculated air volumes in air intake system implausible.
2C57 - Charging pressure control, plausibility pressure too low.
2CF4 - oxygen sensor before catalytic converter, dynamics: slow response.
3187 - Fuel level sensor, left signal: short circuit to B+
3225 - DMTL leakage diagnosis pump, activation: Short circuit to B+


DME shadow codes-
2820 - Absolute pressure sensor, intake pipe:
Multiple fault.
2D2F - oxygen sensor before catalytic converter:
Multiple fault
3189 - Fuel level sensor, left signal: Tank fill-level signal implausibly too high.
318F - Fuel tank level, multiple fault: signal and electrical.

Fuel gauge does not work. (Not worried about this rn xD)

Car is also in "limp mode" (Engine malfunction! Reduced Power)
(car will not hit target boost, mhd logs show that)

(BTW the cat-less downpipe is marked on MHD so the o2 sensors are tuned out)


Before modifying the car it had faulty o2 sensor codes.
I bought new o2 sensors as well as a VRSF cat-less downpipe and installed all the new parts. The car came with an aftermarket charge pipe. I made sure that pre and post cat o2 sensors are in the proper location. Bolted everything back together car runs fine. MHD tuned to stage 2. Did some heavy pulls car was fun. Then, mapped it back to stage 0(stock tune w/ burbles). About two weeks later(the time of this post), I pull the above codes after some driving and some pulls/logs.

Very new to car modification and I am trying my best to diagnose what is going wrong.

Let me know what you think is the culprit. (diverter valve, solenoid, faulty sensors, etc...)

[e69 DRIVER]

Went ahead and bought a diverter valve, will install it this weekend and see if that fixes it.

[F335i]

Originally Posted by e69 DRIVER

DME active codes
28A0 - Air mass system, plausibility: calculated air volumes in air intake system implausible.
2C57 - Charging pressure control, plausibility pressure too low.
2CF4 - oxygen sensor before catalytic converter, dynamics: slow response.
3187 - Fuel level sensor, left signal: short circuit to B+
3225 - DMTL leakage diagnosis pump, activation: Short circuit to B+


DME shadow codes-
2820 - Absolute pressure sensor, intake pipe:
Multiple fault.
2D2F - oxygen sensor before catalytic converter:
Multiple fault
3189 - Fuel level sensor, left signal: Tank fill-level signal implausibly too high.
318F - Fuel tank level, multiple fault: signal and electrical.

Fuel gauge does not work. (Not worried about this rn xD)

Car is also in "limp mode" (Engine malfunction! Reduced Power)
(car will not hit target boost, mhd logs show that)

(BTW the cat-less downpipe is marked on MHD so the o2 sensors are tuned out)


Before modifying the car it had faulty o2 sensor codes.
I bought new o2 sensors as well as a VRSF cat-less downpipe and installed all the new parts. The car came with an aftermarket charge pipe. I made sure that pre and post cat o2 sensors are in the proper location. Bolted everything back together car runs fine. MHD tuned to stage 2. Did some heavy pulls car was fun. Then, mapped it back to stage 0(stock tune w/ burbles). About two weeks later(the time of this post), I pull the above codes after some driving and some pulls/logs.

Very new to car modification and I am trying my best to diagnose what is going wrong.

Let me know what you think is the culprit. (diverter valve, solenoid, faulty sensors, etc...)

2CF4 - oxygen sensor before catalytic converter, dynamics: slow response.

I say this is your issue. You mentioned your car was fun two weeks ago. You probably did not have this code two weeks ago right after you installed the down pipe and sensors.

Simple things first. Check the cables again on the engine and the downpipe.

[e69 DRIVER]

Originally Posted by F335i

2CF4 - oxygen sensor before catalytic converter, dynamics: slow response.

I say this is your issue. You mentioned your car was fun two weeks ago. You probably did not have this code two weeks ago right after you installed the down pipe and sensors.

Simple things first. Check the cables again on the engine and the downpipe.

Thank you for the suggestion.

I figured it out. I disconnected the vacuum hose from exhaust flap to pressure converter while taking off that pain in the a$$ engine cover. So I reconnected that one vacuum hose. I still get a high boost warning. pressure too high in charge pipe but the car runs fine. I drove on the malfunction for two weeks before I was able to find out what it was. Might install the gfb dv+ and see if it makes a difference. Thank goodness the vacuum system on the car is fairly simple LOL