Help with fault codes P025C and P2096

[PeeLo801]

Address 01: Engine Labels: 06J-907-115-CBF.clb
Control Module Part Number: 06J 906 027 K HW: 06J 907 309 B
Component and/or Version: MED17.5.2 TFSI 2 03 1638
Software Coding: 040301081C070160
Work Shop Code: WSC 59393 128 16512
VCID: 336F6C9152688E80EC7
2 Faults Found:

000604 - Fuel Pump Control Module
P025C - 000 - Short to Ground - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 0
Fault Frequency: 1
Mileage: 0 km
Time Indication: 0

Freeze Frame:
RPM: 0 /min
Load: 0.0 %
Speed: 0.0 km/h
Temperature: -40.0°C
Temperature: -40.0°C
Absolute Pres.: 1000.0 mbar
Voltage: 12.573 V

008342 - Post-Catalyst Oxygen (Lambda) Sensor Correction; Bank 1
P2096 - 000 - Too Lean - Intermittent - MIL ON
Freeze Frame:
Fault Status: 10100000
Fault Priority: 0
Fault Frequency: 5
Mileage: 13308 km
Time Indication: 0
Date: 2008.14.29
Time: 07:55:01

Freeze Frame:
RPM: 1201 /min
Load: 11.4 %
Speed: 26.0 km/h
Temperature: 97.0°C
Temperature: 34.0°C
Absolute Pres.: 1000.0 mbar
Voltage: 13.970 V

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Any help would be greatly appreciated. What exactly am I dealing with here? How serious is it? Feel free to be as brutally honest.
__________________

[PeeLo801]

up for some help

[PeeLo801]

up

[PeeLo801]

up..please anyone. I could really use some help on this

[CC'ed]

Well, for the P025C, which is tripped by the fuel pump (in-tank) drawing too much current, check for some abraded insulation of the fuel pump wire, along the harness that runs from the front of the car, to the top of the fuel tank. Maybe a temporary short stopped the pump for a moment, which would then explain the other code, lean mixture, because of the low fuel pressure when the pump stopped.

Have you reset these DTCs, and do they come back when you drive the car?

[PeeLo801]

Well, for the P025C, which is tripped by the fuel pump (in-tank) drawing too much current, check for some abraded insulation of the fuel pump wire, along the harness that runs from the front of the car, to the top of the fuel tank. Maybe a temporary short stopped the pump for a moment, which would then explain the other code, lean mixture, because of the low fuel pressure when the pump stopped.

Have you reset these DTCs, and do they come back when you drive the car?

Yes they have been reset and haven't come back on since. So you think that the two codes are directly related? I'm going to fix the exhaust leaks this weekend. I just don't know what I should be doing with the car. Should I bring it in even though i've cleared the fault codes?

[hummvee2134]

Those two codes aren't related at all. The fuel pump thing happened once (at 0 miles with the engine off- likely in the factory :-0) and shouldn't have triggered a CEL. Don't worry about this code. Just clear it and see if it comes back.

As for the system running lean code, it was triggered 5 times so you definitely have a problem. Do you have any mods to your car, specifically mods affecting the intake? Vacuum leaks will often trigger a lean condition.

[hummvee2134]

Also, just in reading your last post, where is your exhaust leak? Sometimes these can affect the validity of an o2 sensor reading.

[shortydh]

I have definitely seen the fuel pump control modules going out its not rare but not common. They heat up which is normal since its pretty much a relay that's on at all times when the engine is running, and well overheats and boom it starts sporadic faults . Idk just give that module a shot my $ 00 .02

[PeeLo801]

Also, just in reading your last post, where is your exhaust leak? Sometimes these can affect the validity of an o2 sensor reading.

I found out that my exhaust leaks were coming from the v-band clamps on my downpipe as well as from the 3 to 2.5" adapter to the cat back. I tightened everything else up and am now just waiting a week or so before I check again for the codes, but so far so good ever since I cleared them.

It confused me too when I saw that it occurred at 0 mileage, but then why would it throw a CEL later? Or was it the exhaust leak that caused the CEL? I also thought that a p2096 code was one of those soft codes that won't trigger a CEL light, but visible if you search for it. Or is it backwards in my case?

[hummvee2134]

I found out that my exhaust leaks were coming from the v-band clamps on my downpipe as well as from the 3 to 2.5" adapter to the cat back. I tightened everything else up and am now just waiting a week or so before I check again for the codes, but so far so good ever since I cleared them.

It confused me too when I saw that it occurred at 0 mileage, but then why would it throw a CEL later? Or was it the exhaust leak that caused the CEL? I also thought that a p2096 code was one of those soft codes that won't trigger a CEL light, but visible if you search for it. Or is it backwards in my case?

Good to hear. Let's hope that light stays off :-)

VCDS is pretty smart. Any code that will trigger a check engine light will have "MIL ON" in the description. So the fuel pump code would have never triggered a light but once you got the lean code the light came on. I'm just assuming that the fuel pump code was triggered at some point in the assembly or testing process of your car seeing as it has 0 miles. who knows though, the fault frequency is 1 so you really don't have anything to worry about. You would know if your fuel pump was bad

When looking at codes, just pay close attention to the mileage that they were triggered at, the frequency that it was triggered and the "MIL ON" message. This makes it a bit easier to weed out the codes that aren't relevant when you're troubleshooting a problem.