Audi A6 Turns off After EPC Warning

[Cubex]

Hello Experts,

I have an Audi A6 2006 3.2 FSI Quattro, 

The Car recently Started showing the EPC Warning sign, whenever this happens in a few minutes the Car turns off,

i had my eye on the Battery Status in MMI and whenever the EPC sign lights up my battery Starts Draining, When it reaches 0 it turns off and i have to Jump Start the car.

Took it to a few mechanics to Find the issue and all they said was that it was the battery although i had my doubts,

that's why i borrowed a New battery from a Friend to test it First and see.

after the new Battery installation i drove it for about 2 days and got the EPC warning Again and noticed my Battery Status went from 100% to 70%.

it has not turned off on me yet but i have a Feeling it will again.

After the Recent EPC warning i Ran Diagnostics With VCDS and these are the Errors that it came up with.

one thing to Add is that i noticed i Get the EPC Warning only When im Driving, If the Car is on park the sign Turns off.

 

                Address 61: Battery Regul.       Labels: 4F0-910-181.lbl
Control Module Part Number: 4F0 910 181 E    HW: 4F0 915 181 A
  Component and/or Version: J0644 BEM       H12 0590
           Software Coding: 
            Work Shop Code: WSC 02445 823 59480
           Additional Info: 4F0915105C  von VA0  1603160474        
           Additional Info: Geraet 59480
                      VCID: 234277A3E2C65F2660-8076
3 Faults Found:

02254 - Interface to Generator 
            004 - No Signal/Communication - Intermittent
             Freeze Frame:
                    Fault Status: 00100100
                    Fault Priority: 4
                    Fault Frequency: 1
                    Reset counter: 88
                    Mileage: 251874 km
                    Time Indication: 0
                    Date: 2017.02.06
                    Time: 11:34:38

00992 - Consumption Cut-Off Active 
            000 -  -  - Intermittent
             Freeze Frame:
                    Fault Status: 00100000
                    Fault Priority: 7
                    Fault Frequency: 1
                    Reset counter: 255
                    Mileage: 251876 km
                    Time Indication: 0
                    Date: 2017.02.06
                    Time: 11:40:22

02272 - Quiescent Current Stage 1 
            000 -  -  - Intermittent
             Freeze Frame:
                    Fault Status: 00100000
                    Fault Priority: 7
                    Fault Frequency: 1
                    Reset counter: 255
                    Mileage: 251879 km
                    Time Indication: 0
                    Date: 2017.02.06
                    Time: 11:49:05

                Address 01: Engine       Labels: 06E-910-559-BKH.lbl
Control Module Part Number: 4F1 910 559 E    HW: 4F1 907 559 A
  Component and/or Version: 3.2l V6 FSI         0070
           Software Coding: 01050109190F0120
            Work Shop Code: WSC 02325 785 00200
                      VCID: 2D56919BB4029956C6-8078
3 Faults Found:

002129 - Park/Neutral Switch Input Circuit 
               P0851 - 006 - Short to Ground - Intermittent
             Freeze Frame:
                    Fault Status: 00100001
                    Fault Priority: 2
                    Fault Frequency: 4
                    Reset counter: 39
                    Mileage: 251875 km
                    Time Indication: 0
                    Date: 2017.02.06
                    Time: 11:36:59

             Freeze Frame:
                    RPM: 832 /min
                    Mass Air / Rev.: 158.1 mg/str
                    Temperature: 76.5°C
                        Idle
                    Load: 26.3 %
                    Speed: 0.0 km/h

001109 - EVAP System 
               P0455 - 009 - Large Leak Detected
             Freeze Frame:
                    Fault Status: 00010100
                    Fault Priority: 5
                    Fault Frequency: 1
                    Reset counter: 40
                    Mileage: 251878 km
                    Time Indication: 0
                    Date: 2017.02.06
                    Time: 11:43:54

             Freeze Frame:
                    Lambda: -1.0 %
                    Temperature: 31.5°C
                    Temperature: 81.0°C
                    Speed: 16.0 km/h
                    Time: 563.2 s
                    Temperature: 592.0°C

001072 - Catalyst System; Bank 2 
               P0430 - 006 - Efficiency Below Threshold
             Freeze Frame:
                    Fault Status: 00010001
                    Fault Priority: 5
                    Fault Frequency: 1
                    Reset counter: 40
                    Mileage: 251898 km
                    Time Indication: 0
                    Date: 2017.02.06
                    Time: 13:51:16

             Freeze Frame:
                    RPM: 2304 /min
                    Mass Air / Rev.: 305.2 mg/str
                    Temperature: 82.5°C
                        Part Throttle
                    Temperature: 752.0°C
                    Speed: 113.0 km/h

Readiness: 0000 0101
 

[Trevor]

Hi Cubex...welcome to the Forum

I would check the battery condition with a heavy discharge tester to determine the strength / capacity and if necessary replace with a quality battery.

I believe there are two batteries on the A6 one in the engine for the powertrain and one in the boot for the body control....if so, check both because this can affect the balance.

If all is okay there, then suspect the alternator

Let us know how you get on with this one

Cheers  Trevor

[Brad-B5]

2 hours ago, Trevor said:

If all is okay there, then suspect the alternator

I agree with Trevor, I was just about to say, it sounds to me like an alternator issue, quick power loss and such a fast right is very strange.

Regards

Bradley

[Cubex]

9 hours ago, Trevor said:

Hi Cubex...welcome to the Forum

I would check the battery condition with a heavy discharge tester to determine the strength / capacity and if necessary replace with a quality battery.

I believe there are two batteries on the A6 one in the engine for the powertrain and one in the boot for the body control....if so, check both because this can affect the balance.

If all is okay there, then suspect the alternator

Let us know how you get on with this one

Cheers  Trevor

 

6 hours ago, Brad-B5 said:

I agree with Trevor, I was just about to say, it sounds to me like an alternator issue, quick power loss and such a fast right is very strange.

Regards

Bradley

Thank you for your Reply,

I do Suspect the alternator but my worry is what if its The voltage regulator or the Harness from the alternator or even the Battery Control module?

Well till a Second ago i was quite sure my car had only one battery in the Trunk, don't think there's one near the engine, the only Electronic Part there is the ECU.

I have checked the New Battery voltage and shows about 13.6 when the engine is running and around 13.4 with the lights,AC,Stereo on

took the car to a mechanic as well and they said all is well and that both the battery and the alternator are working fine,

but the issue is when i took the car to them i did not have any EPC warning light as this issue is  Intermittent they suggested i would go to them when i have an EPC warning so they can determine the issue then, which is not the best solution to this problem unfortunately.

[Brad-B5]

I've just re-read my last reply, sorry for the bad English, I typed it up on my phone (silly autocorrect.

I hope you find the main problem to your Issue and keep us updated, Hopefully they will be able to find the issue soon :)

Regards

Bradley