So towards the end of a mini road trip (120 miles total). The car started running very poorly at low speeds. It turned off on its own a couple times. Yet I was able to restart it and get home

After making it home I plugged in laptop to the car an i got the codes below. I cleared the codes a couple times and they came back right away.

I am freaking a bit here. The only thing that i can think off is that since it has been raining a lot in the last few days and that some water did get in and caused a short.

I did check the ECU fuse which was fine. Checked the ECU box and it was dried. I did noticed that next to the ECU box the seal that it supposed to seal the hood cable going through the firewall was missing. I could see if there was tons of rain, possibly water got through there. I plan to fix that very soon.


can someone suggest what else to look for? I did the timing belt about 400 miles ago and i am really hoping this is not related.


Mauricio A6
Audi A6 avant 2000


======================7-10-01=============================
VAG-COM Version: Release 409.1-S
Control Module Part Number: 3B0 907 551 BA
Component and/or Version: 2.8L V6/5V G 0050
Software Coding: 07252
Work Shop Code: WSC 20209
14 Faults Found:
16518 - Oxygen (Lambda) Sensor B1 S1: No Activity
P0134 - 35-00 - -
16538 - Shareware Version. To Decode all DTCs
P0154 - 35-00 - Please Register/Activate
17833 - Shareware Version. To Decode all DTCs
P1425 - 35-00 - Please Register/Activate
17843 - Secondary Air Pump Relay (J299): Short to Ground
P1435 - 35-00 - -
17938 - Shareware Version. To Decode all DTCs
P1530 - 35-00 - Please Register/Activate
17829 - Shareware Version. To Decode all DTCs
P1421 - 35-00 - Please Register/Activate
17923 - Manifold Valve (N156): Short to Ground
P1515 - 35-00 - -
17529 - Shareware Version. To Decode all DTCs
P1121 - 35-00 - Please Register/Activate
17525 - Shareware Version. To Decode all DTCs
P1117 - 35-00 - Please Register/Activate
17522 - Oxygen (Lambda) Sensor: B1 S2: Internal Resistance too High
P1114 - 35-00 - -
17548 - Shareware Version. To Decode all DTCs
P1140 - 35-00 - Please Register/Activate
16486 - Shareware Version. To Decode all DTCs
P0102 - 35-00 - Please Register/Activate
17523 - Oxygen (Lambda) Sensor Heating Circuit: B1 S1: Short to Ground
P1115 - 35-00 - -
17527 - Shareware Version. To Decode all DTCs
P1119 - 35-00 - Please Register/Activate

 

You only have 5 codes. Mostly O2 sensors which are probably why the poor running. I highlighted the other ones that will help you diagnose the problem better. Shareware version is limited. How long has your CEL been on?

 

The CEL came on the day before. I find it strange getting all these codes at once

 

ok. so i fixed the leaky groomet and i am down to 8 codes.

any suggestions anyone?

8 Faults Found:
17833 - EVAP Purge Valve (N80): Short to Ground
P1425 - 35-00 - -
17843 - Shareware Version. To Decode all DTCs
P1435 - 35-00 - Please Register/Activate
17938 - Shareware Version. To Decode all DTCs
P1530 - 35-00 - Please Register/Activate
17829 - Secondary Air Injection Solenoid Valve (N112): Short to Ground
P1421 - 35-00 - -
17923 - Shareware Version. To Decode all DTCs
P1515 - 35-00 - Please Register/Activate
17529 - Shareware Version. To Decode all DTCs
P1121 - 35-00 - Please Register/Activate
17525 - Oxygen (Lambda) Sensor Heating Circuit: B1 S2: Short to Ground
P1117 - 35-00 - -
16486 - Shareware Version. To Decode all DTCs
P0102 - 35-00 - Please Register/Activate

 

Just a guess - I got a mess of DTC's all at once when the compartment between the engine and the cab filled with water due to a plugged drain. Dry in there?

 

Thanks for the suggestion.

That area is dry now. When the problem first occurred that area was indeed not draining well at all. I since corrected that problem and it is dry now.
Yet I still have 8 to 12 error codes. Despite me resetting them, they come right back.