Audi a6 2003 3.0 quattro major problems and need help

[MR IGOTBASS]

I have a 2003 a6 3.0 quattro. It has 60K on the clock. The CEL and ESP light are on. I vagged the car and here is what I got. I will post the entire scan. Someone please lead me in the right direction. I need some help and you guys are the best.

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Address 01: Engine
Controller: 8E0 909 559 E
Component: 3.0L V6/5V G 0003
Coding: 0016752
Shop #: WSC 02325
14 Faults Found:
17833 - EVAP Purge Valve (N80): Short to Ground
P1425 - 002 - Lower Limit Exceeded
17880 - EVAP Leak Detection Pump: Short to Ground
P1472 - 002 - Lower Limit Exceeded
17843 - Secondary Air Pump Relay (J299): Short to Ground
P1435 - 002 - Lower Limit Exceeded
17829 - Secondary Air Injection Solenoid Valve (N112): Short to Ground
P1421 - 002 - Lower Limit Exceeded
17923 - Intake Manifold Valve (N156): Short to Ground
P1515 - 002 - Lower Limit Exceeded
17529 - Oxygen (Lambda) Sensor Heating Circuit: B2 S2: Short to Ground
P1121 - 002 - Lower Limit Exceeded
17525 - Oxygen (Lambda) Sensor Heating Circuit: B1 S2: Short to Ground
P1117 - 002 - Lower Limit Exceeded
17522 - Oxygen (Lambda) Sensor; B1 S2: Internal Resistance too High
P1114 - 002 - Lower Limit Exceeded
17548 - Oxygen (Lambda) Sensor; B2 S2: Internal Resistance too High
P1140 - 002 - Lower Limit Exceeded
16486 - Mass Air Flow Sensor (G70): Signal too Low
P0102 - 002 - Lower Limit Exceeded
17523 - Oxygen (Lambda) Sensor Heating: B1 S1: Short to Ground
P1115 - 002 - Lower Limit Exceeded
17527 - Oxygen (Lambda) Sensor Heating Circuit: B2 S1: Short to Ground
P1119 - 002 - Lower Limit Exceeded
16705 - Engine Speed Sensor (G28): Implausible Signal
P0321 - 008 - Implausible Signal - Intermittent
19537 - Engine Temperature too Low
P3081 - 008 - Implausible Signal
Readiness: 0110 1101

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Address 02: Auto Trans
Controller: 4B0 927 156 FF
Component: AG5 01V 3.0l5V USA 0910
Coding: 0001002
Shop #: WSC 02325
1 Fault Found:
18265 - Load Signal: Error Message from ECU
P1857 - 003 - Mechanical Failure

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Address 03: ABS Brakes
Controller: 4B0 614 517 R
Component: ABS/ESP allrad 2330
Coding: 06497
Shop #: WSC 00000
1 Fault Found:
18265 - Load Signal: Error Message from ECU
P1857 - 35-00 - -

[Uwe@Ross-Tech.com]

likely have a common +12 supply. Check wiring diagrams to find where that common point is and you'll likely have found the source of your problem.

I haven't seen issues like this on Audis, but on Mk.4 VW's, that common point is normally the fuel pump relay.

-Uwe-

[MOOG TECH]

I would start by replacing the fuel pump relay.
Then erase the faults and see if any come back. The fuel pump relay circuit can cause a back feeding power circuit short to ground fault in a ton of other circuits.I have seen this problem
before and the fuel pump relay has fixed it. It also wouldn't hurt to do a voltage drop test of the ground circuit and visually inspect ground
connections in the engine compartment.

[MR IGOTBASS]

I will try the fuel pump relay. Problem in that I downloaded the bently papers and it says the relay is located in behind the storage on the drivers side. Where exactly is this pointing to. It is not very clear. If someone could point me to the location of the relay that would help alot.

[MOOG TECH]

It's located behind the drivers side knee panel and in the relay panel behind that.I don't remember which exact position but if you buy a new one you can then match it up with the one in that panel.The Audi is getting it's second wind.

[MR IGOTBASS]

I HAVE ANOTHER A6 HERE, SWAPPED OUT THE RELAY AND NOTHING CHANGES. I HAVE NO CLUE. DOES ANYONE HAVE ANY SUGGESTIONS

[MR IGOTBASS]

ttt

[autotechusa]

The car running missing all cylinders, specially #1 #4 #5, there is a air vent valve in the back on the top of the intake manifold is keep sucking air, if I block this valve, and the car will run ok. Is that intake manifold has prolem need to be replace, I don't think is the valve has problem.

[jrv666]

I know this issue was a long time ago, but did you ever discover a solution to this problem. My A4 3.0 has just started doing this and throws Exactly the same codes under engine. Car misses, runs lumpy and revs jump around. CEL and ESP on, Auto box also feels jerky - especially when selecting 'D' (no faults logged in auto box tho)

[blm9363]

Abs and traction control lights are on.car has no power unless gas padel is half or above 3000 rpms.is it the abs module or something else like fuel pump?please help.