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I bought the car probably three weeks ago. Today my check engine light came on and I took it to autozone to use their OEM checker thing. The guy printed out eight codes for me. It all seems to be electrical so I wonder if they are all related to the just one thing.

Here is a list of codes:

P0672
Cylinder 2 glow plug circuit

P0727
Engine Speed Input Circuit No signal

P0670
Glow Plug Module Control Circuit

P2426
EGR cooling Valve Control Circuit

P1027
Activation Intake Manifold Flap For Air Stream

P0245
Turbo/Super Charger Wastegate Solenoid "A" Low

P2102
Throttle Actuator Control Motor Circuit

P2108
Throttle Actuator Control Module Performance Explanation
 

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VAG Error Code: 17056

EOBD II Error Code: P0672

Fault Location:
Glow Plug Cylinder 2 (Q11) Circuit - Circuit Malfunction

Possible Cause:
Malfunction Indicator Lamp (MIL)(K83) active.
No Pre-Glow Period.
Lack/Loss of Power.
Poor Cold Starting.
Engine hesitation.

Glow Plug Wiring/Connector(s) faulty.
Relay.
Glow plug control module.
Glow Plug faulty.
Engine Control Module (ECM).

Possible Solutions:
Check/Replace all faulty Wiring/Connector(s).
Read Measuring Value Blocks (MVB).
Check Glow Plug.

Special Notes:
See TDIClub Glow Plug 101

When is the code detected?:
The Engine Control Module (ECM) has detected a fault in the cylinder #1 glow plug circuit.

VAG Error Code: 17111

EOBD II Error Code: P0727

Fault Location:
Engine Speed Input Circuit - No Signal

Possible Cause:
Malfunction Indicator Lamp (MIL)(K83) active.

Wiring/Connector(s).
Crankshaft Position (CKP) Sensor (G28)/Engine Speed (RPM) Sensor (G28).
Communication error between the Engine Control Module (ECM) and Transmission Control Module (TCM) (J217).

When is the code detected?:
The P0727 Codes is triggered when the Transmission Control Module (TCM) receives no signal from the Engine Control Module (ECM).

Description:
The Engine Control Module (ECM) monitors the engine speed through the Crankshaft Position (CKP) sensor with the engine running, and send signal to the Transmission Control Module (TCM).

VAG Error Code: 17054

EOBD II Error Code: P0670

Fault Location:
Glow Plug Control Module (GPCM) 1 - Circuit Malfunction

Possible Cause:
Malfunction Indicator Lamp (MIL)(K83) active.
Lack/Loss of Power.
The engine may be harder to start.
Engine hesitation.

Wiring/Connector(s).
Glow Plug Control Module (GPCM) (J271).
Glow plug.
Engine Control Module (ECM).

Possible Solutions:
Check/Replace all faulty Wiring/Connector(s).
Read Measuring Value Blocks (MVB).

When is the code detected?:
The Engine Control Module (ECM) has detected a fault on the Glow Plug Control Module (GPCM) control circuit.

EOBD II Error Code: P2426


Fault Location:
Exhaust Gas Recirculation (EGR) Cooling Valve - Circuit Low

Possible Cause:
Wiring/Connector(s) short to earth.
Fuse(s).
Exhaust Gas Recirculation (EGR) cooling valve.

VAG Error Code: 17435

EOBD II Error Code: P1027

Fault Location:
Intake Manifold Air Control Solenoid - Short Circuit to Earth

Possible Cause:
Malfunction Indicator Lamp (MIL)(K83) active.

Wiring/Connector(s) short to earth.
Fuse(s).
Intake manifold air control solenoid.

VAG Error Code: 16629

EOBD II Error Code: P0245

Fault Location:
Turbocharger (TC) Wastegate Regulating Valve 'A/Supercharger (SC) Bypass Valve 'A'' - Circuit Low/Short Circuit to Earth

Possible Cause:
Malfunction Indicator Lamp (MIL)(K83) active.

Wiring/Connector(s) short to earth.
Fuse(s).
Turbocharger (TC) wastegate regulating valve.
Supercharger (SC) bypass valve.
Engine Control Module (ECM).

Possible Solutions:
Check/Replace all faulty Wiring/Connector(s).
Check/Replace Fuse(s).
Check Engine Electronics Power Supply Relay (J757).
Check Boost Pressure Control Valve (N75).

When is the code detected?:
The Engine Control Module (ECM) has detected a signal outside parameters on the wastegate solenoid circuit.

EOBD II Error Code: P2102


Fault Location:
Throttle Actuator Control (TAC) Motor - Circuit Low

Possible Cause:
Wiring/Connector(s) short to earth.
Fuse(s).
Throttle actuator control (TAC) motor.

Possible Solutions:
Check/Replace all faulty Wiring/Connector(s).
Check/Replace Fuse(s).
Read Measuring Value Blocks (MVB).

EOBD II Error Code: P2108


Fault Location:
Throttle Actuator Control (TAC) Control Module - Performance Problem

Possible Cause:
Malfunction Indicator Lamp (MIL)(K83) active.
No throttle response.

Throttle actuator control (TAC) module.

Possible Solutions:
Check/Replace all faulty Wiring/Connector(s).
Read Measuring Value Blocks (MVB).

As taken from my Free EOBD II Error Codes software
 

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I am curios to know if OP ever found a solution to this problem. I have a similar set of codes:
P2102 Throttle Actuator Control Motor Circuit Low
P0245 Turbocharger/Supercharger Wastegate Solenoid A Low
P1027 Intake Manifold Air Control Solenoid Short To Ground
P2426 Exhaust Gas Recirculation Cooling Valve Control Circuit Low
P0670 Glow Plug Control Module Control Circuit/Open
P2108 Throttle Actuator Control Module Performance

I did some digging and found a wire harness that had worn through and had rubbed some of the wires bare. Re-soldered them and shrink tubed them as well. On my car it was the group that runs off of the injector rail (including coolant temp, oil pressure, etc.).

This did not solve the code issue though, they immediately show back up if cleared.

Does anyone have any insight on this? or is there any common locations that the wiring harnesses wear?
All of the codes were thrown the same day.

I am also curios to know if this short may have messed up my ecu?
 

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ECU should be O.K., most circuits are "protected". Weak battery sometimes will cause a bunch of codes. Or there is more wire damage.
 

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I bought the car probably three weeks ago. Today my check engine light came on and I took it to autozone to use their OEM checker thing. The guy printed out eight codes for me. It all seems to be electrical so I wonder if they are all related to the just one thing.

Here is a list of codes:

P0672
Cylinder 2 glow plug circuit

P0727
Engine Speed Input Circuit No signal

P0670
Glow Plug Module Control Circuit

P2426
EGR cooling Valve Control Circuit

P1027
Activation Intake Manifold Flap For Air Stream

P0245
Turbo/Super Charger Wastegate Solenoid "A" Low

P2102
Throttle Actuator Control Motor Circuit

P2108
Throttle Actuator Control Module Performance Explanation
[/QUOTe
its probably related 2 a couple of things but mainly 1 , Check all of your fuses first , and i mean every last one of them. one blown speed or tranny related fuse could cause all of this . also check your fuse box for corrosion. next up I would check the actual speed sensor at the tranny for corrosion , if you are in canada or the United states and just got rid of winter , the salt brine and plain old salt can cause havoc to all of our cars
 

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I figured out what the problem is.
Maybe this will help someone down the road. The Codes were all linked.

Fuse#34 "Engine Control Elements" had been replaced and kept popping. Disconnected all of the devices I suspected ran through it (Boost relay, etc) and issue continued.
Connected a cable toner and found out that it also runs the Throttle Control Actuator. I had previously ignored this because the Actuator code was thrown about a week prior to the other 5.

Well, The actuator had some kind of fault which was popping the fuse an causing all of the following codes
P2102 Throttle Actuator Control Motor Circuit Low
P0245 Turbocharger/Supercharger Wastegate Solenoid A Low
P1027 Intake Manifold Air Control Solenoid Short To Ground
P2426 Exhaust Gas Recirculation Cooling Valve Control Circuit Low
P0670 Glow Plug Control Module Control Circuit/Open
P2108 Throttle Actuator Control Module Performance

Now I only have the P2102 code (as it is disconnected), but the others cleared and are not in "pending"

udraft was correct as well, The ECU had not taken any damage
 

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Excellent detective work. Its tough sometimes with these cars to get way down in behind there or wherever to actually find the fuses and then even tougher to find the elbow room to examine them all.....I have been a mechanic here at diygarage.ca since they opened 16 years ago the number one problem I find these days electronically right from the factory are under amperaged fuses installed. For Example last week I was installing an Android 10 Radio into an EOS , the owner asked me to take a look at his internal heater AC blower fan said it's been to dealer at least 4 times since new for this , all times he got the car back the same day, under warranty , there was a blown 10amp fuse in that slot , who does that ? Its Sub Par , I am seeing more and more of this kind of thing , someone drops a dime into their cigarette lighter hole and then 5 different things don't work and they have no idea why ,why do they mount the cigarette lighter right there? They want you to drop the dime in there and have it blow 2-3 fuses so you have to come in to the dealer to get it fixed, it's impressive workmanship. Anyway I digress ....


[/QUOTE]
 
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