multiple short to ground faults, need help! and a wiring diagram

[earhythmic]

A few days ago I was driving and smelled some electrical burning and a CEL and EPC light popped up. When I got to my destination I popped the hood to notice some white magic smoke coming from the drivers side engine bay that eventually went away. The car drives fine, but I've not really gotten on it since this happened. I finally got a chance to pull codes and it looks like a common ground wire may have fried. Does anyone have any insight to this, and maybe a wiring diagram for where all of these modules wire into the harness? I've done some slight poking around and I can't clearly see any spots that have been burned and melted. Thanks in advance!

Address 01: Engine (DET-CPMA) Labels:. 06H-907-115-CDN.clb
Part No SW: 8K5 907 115 F HW: 8K2 907 115 L
Component: 2.0l R4/4V TF H09 0007
Revision: ECH09---
Coding: 722A0013242600062000
Shop #: WSC 01840 002 1048576
ASAM Dataset: EV_ECM20TFS0118K5907115F 001008
ROD: EV_ECM20TFS0118K5907115F.rod
VCID: 35614B4E941503EE72-8060

20 Faults Found:
11914 - Cold Start Valve
P303F 00 [175] - Short to Ground
MIL ON - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 28
Mileage: 158933 km
Date: 2018.02.09
Time: 21:52:49

Engine speed: 762.50 /min
Normed load value: 16.9 %
Vehicle speed: 0 km/h
Coolant temperature: 60 °C
Intake air temperature: 24 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 14.465 V
Unlearning counter according OBD: 40
Median injection timing: 1.727 ms
Engine operating condition-Channel 87: Idling
Relative load value: 20.74 %
Engine torque: 31.7 Nm

14348 - Left Engine Mount Solenoid Valve (N144)
P1572 00 [047] - Short to Ground
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 158933 km
Date: 2018.02.09
Time: 21:52:49

Engine speed: 762.50 /min
Normed load value: 16.5 %
Vehicle speed: 0 km/h
Coolant temperature: 59 °C
Intake air temperature: 24 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 14.442 V
Unlearning counter according OBD: 40
Median injection timing: 1.484 ms
Engine operating condition-Channel 87: Idling
Relative load value: 20.55 %
Engine torque: 32.3 Nm

14347 - Right Engine Mount Solenoid Valve (N145)
P1576 00 [047] - Short to Ground
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 158933 km
Date: 2018.02.09
Time: 21:52:49

Engine speed: 762.50 /min
Normed load value: 16.5 %
Vehicle speed: 0 km/h
Coolant temperature: 59 °C
Intake air temperature: 24 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 14.442 V
Unlearning counter according OBD: 40
Median injection timing: 1.484 ms
Engine operating condition-Channel 87: Idling
Relative load value: 20.55 %
Engine torque: 32.3 Nm

9490 - Oil Pressure Regulation Valve
P165F 00 [047] - Short to GND
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 158933 km
Date: 2018.02.09
Time: 21:52:49

Engine speed: 739.50 /min
Normed load value: 16.5 %
Vehicle speed: 0 km/h
Coolant temperature: 60 °C
Intake air temperature: 24 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 14.324 V
Unlearning counter according OBD: 40
Median injection timing: 1.532 ms
Engine operating condition-Channel 87: Idling
Relative load value: 20.65 %
Engine torque: 37.7 Nm

18065 - Coolant Pump 2
P261C 00 [109] - Short to GND
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 158933 km
Date: 2018.02.09
Time: 21:52:50

Engine speed: 744.50 /min
Normed load value: 17.3 %
Vehicle speed: 0 km/h
Coolant temperature: 60 °C
Intake air temperature: 24 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 14.442 V
Unlearning counter according OBD: 40
Median injection timing: 1.550 ms
Engine operating condition-Channel 87: Idling
Relative load value: 21.30 %
Engine torque: 35.6 Nm

10061 - Fuel Pump
P3043 00 [032] - Mechanical Malfunction
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 159352 km
Date: 2018.02.12
Time: 10:50:10

Engine speed: 893.00 /min
Normed load value: 17.3 %
Vehicle speed: 0 km/h
Coolant temperature: 54 °C
Intake air temperature: 27 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 11.921 V
Unlearning counter according OBD: 31
Fuel pump: specified value: 32.785 %
Low fuel pressure: specified value: 600.0 kPa
Fuel temperature: 53.3 °C
Adaptation of Fuel Pump (FP): -53.2 kPa
High fuel pressure: specified value: 3.9935 MPa

7206 - Cam Adjustment Actuator A; Cylinder 1
P11A1 00 [047] - Elec. Malf. or Open Circuit
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 158933 km
Date: 2018.02.09
Time: 21:52:50

Engine speed: 745.00 /min
Normed load value: 16.9 %
Vehicle speed: 0 km/h
Coolant temperature: 60 °C
Intake air temperature: 24 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 14.489 V
Unlearning counter according OBD: 40
Median injection timing: 1.542 ms
Engine operating condition-Channel 87: Idling
Relative load value: 21.21 %
Engine torque: 34.9 Nm

7209 - Cam Adjustment Actuator B; Cylinder 1
P11A3 00 [047] - Elec. Malf. or Open Circuit
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 158933 km
Date: 2018.02.09
Time: 21:52:50

Engine speed: 744.50 /min
Normed load value: 17.3 %
Vehicle speed: 0 km/h
Coolant temperature: 60 °C
Intake air temperature: 24 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 14.442 V
Unlearning counter according OBD: 40
Median injection timing: 1.550 ms
Engine operating condition-Channel 87: Idling
Relative load value: 21.30 %
Engine torque: 35.6 Nm

7218 - Cam Adjustment Actuator A; Cylinder 3
P11A9 00 [047] - Elec. Malf. or Open Circuit
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 158933 km
Date: 2018.02.09
Time: 21:52:50

Engine speed: 745.00 /min
Normed load value: 16.9 %
Vehicle speed: 0 km/h
Coolant temperature: 60 °C
Intake air temperature: 24 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 14.489 V
Unlearning counter according OBD: 40
Median injection timing: 1.542 ms
Engine operating condition-Channel 87: Idling
Relative load value: 21.21 %
Engine torque: 34.9 Nm

7221 - Cam Adjustment Actuator B; Cylinder 3
P11AB 00 [047] - Elec. Malf. or Open Circuit
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 158933 km
Date: 2018.02.09
Time: 21:52:50

Engine speed: 744.50 /min
Normed load value: 17.3 %
Vehicle speed: 0 km/h
Coolant temperature: 60 °C
Intake air temperature: 24 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 14.442 V
Unlearning counter according OBD: 40
Median injection timing: 1.550 ms
Engine operating condition-Channel 87: Idling
Relative load value: 21.30 %
Engine torque: 35.6 Nm

7224 - Cam Adjustment Actuator A; Cylinder 4
P11AD 00 [047] - Elec. Malf. or Open Circuit
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 158933 km
Date: 2018.02.09
Time: 21:52:50

Engine speed: 745.00 /min
Normed load value: 16.9 %
Vehicle speed: 0 km/h
Coolant temperature: 60 °C
Intake air temperature: 24 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 14.489 V
Unlearning counter according OBD: 40
Median injection timing: 1.542 ms
Engine operating condition-Channel 87: Idling
Relative load value: 21.21 %
Engine torque: 34.9 Nm

7227 - Cam Adjustment Actuator B; Cylinder 4
P11AF 00 [047] - Elec. Malf. or Open Circuit
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 158933 km
Date: 2018.02.09
Time: 21:52:50

Engine speed: 744.50 /min
Normed load value: 17.3 %
Vehicle speed: 0 km/h
Coolant temperature: 60 °C
Intake air temperature: 24 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 14.442 V
Unlearning counter according OBD: 40
Median injection timing: 1.550 ms
Engine operating condition-Channel 87: Idling
Relative load value: 21.30 %
Engine torque: 35.6 Nm

7212 - Cam Adjustment Actuator A; Cylinder 2
P11A5 00 [047] - Elec. Malf. or Open Circuit
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 158933 km
Date: 2018.02.09
Time: 21:52:50

Engine speed: 745.00 /min
Normed load value: 16.9 %
Vehicle speed: 0 km/h
Coolant temperature: 60 °C
Intake air temperature: 24 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 14.489 V
Unlearning counter according OBD: 40
Median injection timing: 1.542 ms
Engine operating condition-Channel 87: Idling
Relative load value: 21.21 %
Engine torque: 34.9 Nm

7215 - Cam Adjustment Actuator B; Cylinder 2
P11A7 00 [047] - Elec. Malf. or Open Circuit
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 158933 km
Date: 2018.02.09
Time: 21:52:50

Engine speed: 744.50 /min
Normed load value: 17.3 %
Vehicle speed: 0 km/h
Coolant temperature: 60 °C
Intake air temperature: 24 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 14.442 V
Unlearning counter according OBD: 40
Median injection timing: 1.550 ms
Engine operating condition-Channel 87: Idling
Relative load value: 21.30 %
Engine torque: 35.6 Nm

2798 - Bank 1 Camshaft A (Intake) Position Actuator
P2088 00 [175] - Short to Ground
MIL ON - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 158933 km
Date: 2018.02.09
Time: 21:52:50

Engine speed: 745.00 /min
Normed load value: 16.9 %
Vehicle speed: 0 km/h
Coolant temperature: 60 °C
Intake air temperature: 24 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 14.489 V
Unlearning counter according OBD: 40
Median injection timing: 1.542 ms
Engine operating condition-Channel 87: Idling
Relative load value: 21.21 %
Engine torque: 34.9 Nm

12617 - Sensor for Fuel Composition / Quality (G446)
P0179 00 [175] - Signal too High
MIL ON - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 158933 km
Date: 2018.02.09
Time: 21:52:54

Engine speed: 763.00 /min
Normed load value: 16.9 %
Vehicle speed: 0 km/h
Coolant temperature: 60 °C
Intake air temperature: 24 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 14.442 V
Unlearning counter according OBD: 40
Median injection timing: 1.729 ms
Engine operating condition-Channel 87: Idling
Relative load value: 20.81 %
Engine torque: 31.1 Nm

2972 - Intake Manifold Flap; Bank 1
P2009 00 [175] - Short to Ground
MIL ON - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 158933 km
Date: 2018.02.09
Time: 21:52:50

Engine speed: 756.50 /min
Normed load value: 16.9 %
Vehicle speed: 0 km/h
Coolant temperature: 60 °C
Intake air temperature: 24 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 14.465 V
Unlearning counter according OBD: 40
Median injection timing: 1.625 ms
Engine operating condition-Channel 87: Idling
Relative load value: 21.19 %
Engine torque: 33.4 Nm

2984 - Solenoid Valve for Boost Pressure Control (N75)
P0245 00 [175] - Short to Ground
MIL ON - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 158933 km
Date: 2018.02.09
Time: 21:52:50

Engine speed: 744.50 /min
Normed load value: 17.3 %
Vehicle speed: 0 km/h
Coolant temperature: 60 °C
Intake air temperature: 24 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 14.442 V
Unlearning counter according OBD: 40
Median injection timing: 1.550 ms
Engine operating condition-Channel 87: Idling
Relative load value: 21.30 %
Engine torque: 35.6 Nm

4235 - Evap System Purge Control Valve (N80)
P0458 00 [175] - Short to Ground
MIL ON - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 158933 km
Date: 2018.02.09
Time: 21:52:50

Engine speed: 745.00 /min
Normed load value: 16.9 %
Vehicle speed: 0 km/h
Coolant temperature: 60 °C
Intake air temperature: 24 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 14.489 V
Unlearning counter according OBD: 40
Median injection timing: 1.542 ms
Engine operating condition-Channel 87: Idling
Relative load value: 21.21 %
Engine torque: 34.9 Nm

4269 - Turbocharger Bypass Valve Control Circuit
P0034 00 [047] - Low
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 158933 km
Date: 2018.02.09
Time: 21:52:50

Engine speed: 745.00 /min
Normed load value: 16.9 %
Vehicle speed: 0 km/h
Coolant temperature: 60 °C
Intake air temperature: 24 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 14.489 V
Unlearning counter according OBD: 40
Median injection timing: 1.542 ms
Engine operating condition-Channel 87: Idling
Relative load value: 21.21 %
Engine torque: 34.9 Nm

[earhythmic]

At this point I half suspect a fried relay. Here’s a relay legend I finally found online (why is it so difficult?!), so, which relay would you suspect would control those modules listed above with errors?

[Saabist]

I would suspect a problem with the engine managment unit or the relay (E) . A loose connection can also trigger those codes but that should not cause a burnt smell.. Try sniffing around the relay box and the engine managment unit. There should still be a burnt smell.

[earhythmic]

Update. I put a new fuse into the ECM module control that had blown. Right away smoke starting coming from somewhere under the manifold and then disappeared before I could track it down. It didn’t blow the ECM control fuse again so I was able to clear all codes and I now have no warning lights. I romped on it a little and scanned codes again, only code now is the boost control module. Thats likely what smoked. So I at least have some direction now.

[peakingducks]

Can't say I know anything about fixing electrical issues but I have the wiring diagrams.

I can send them to you if you still need.

[earhythmic]

Can't say I know anything about fixing electrical issues but I have the wiring diagrams.

I can send them to you if you still need.

Yes please! If I need to start digging into the wiring harness it would be good to have a reference.

[earhythmic]

Bumping this. Does anyone know where the N249 is in our car? From what I gather the N249 is indeed the diverter valve on our cars, but a sensor must live somewhere to control it, I suspect under the intake manifold where the smoke was coming from. Here’s the current error I’m getting:

[Perry01]

Have you tried to backtrack from the wiring harness for the DV?

[b8_squarebody_l]

Update. I put a new fuse into the ECM module control that had blown. Right away smoke starting coming from somewhere under the manifold and then disappeared before I could track it down. It didn’t blow the ECM control fuse again so I was able to clear all codes and I now have no warning lights. I romped on it a little and scanned codes again, only code now is the boost control module. Thats likely what smoked. So I at least have some direction now.

What fuse did you replace and do you have the wiring diagrams?

[earhythmic]

What fuse did you replace and do you have the wiring diagrams?

I replaced one of the fuses in the ECU compartment. I think I actually had to pull the whole ECU out to access them. Turned out what was smoking was my afterrun coolant pump connector melting and shorting out, blowing the fuse and giving me codes for every other sensor that runs through it. There’s an open TSB for it, not sure if you’ve had yours looked at yet.

I’ll try to pull up a diagram

edit: I replaced either fuse 15 or 16 on the ST1 fuse block.

[Smac770]

The afterrun coolant pump V51 is fuse 7 in ST1. The coolant pump V50 is fuse 16. Both fuses power a variety of ECU managed devices.
Prior to Nov 2011, you won't see the V51 pump on fuse 7, since the pump was not directly connected. Instead, you'll see the J496 aux engine coolant pump relay, as that is what supplied power to the V51.

Wiring diagram PDF is available at erwin.audiusa.com, along with all the other repair docs for your car.

[Theiceman]

umm did you guys see the mount solenoid shorted to ground ??? I think that's the wire that comes from the drivers motor mount isn't it ? did you check that ?

but if the fuse blows immediately thats actually a good sign.

remove fuse ... check to see which is hot side using a meter...
on the NON HOT side hook the meter up for resistance and put on non hot side and ground. You will have zero or very little resistance. ( that's why it is blowing the fuse. )
start disconnecting the wiring harness on that circuit until the resistance jumps up , you have found your short.

[igillott]

Sorry can't help but if you do find a wiring diagram for a B8 A4 please let me know.

[Theiceman]

daym , just noticed Original post was over a year old, and route cause was the now infamous ARCP . I should learn to read better

[pahoynaas]

I realize this thread is fairly old, but I desperately need the wiring schematics for my 2010 A4 Avant 2.0 Quattro. If you still have them and are willing to share, please PM me. Thanks so much!!