J724 turbo actuator/engine ECU/wires fault...
 

Hi all. Anyone encountered this? Have had a sort of limp mode situation a few times just this week. No dash lights, but feels like limp mode.

Did a scan today. Got this:

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Address 01: Engine Labels: Redir Fail!
Control Module Part Number: 4E0 910 402 G HW: 4E0 907 401 D
Component and/or Version: 3.0L V6TDI G000AG 0030
Software Coding: 0011973
Work Shop Code: WSC 02313 785 00200
VCID: 2045FE59F3D8C29
3 Faults Found:

013128 - Control Circuit for Controller for Turbocharger 1 (J724)
P3348 - 004 - Electrical Malfunction - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 0
Fault Frequency: 8
Mileage: 260838 km
Time Indication: 0
Date: 2019.06.25
Time: 18:27:32

Freeze Frame:
RPM: 819 /min
Torque: 62.4 Nm
Speed: 23.5 km/h
Temperature: 63.0°C
Duty Cycle: 80.9 %
Voltage: 13.83 V
Duty Cycle: 12.6 %

000260 - Mass Air Flow Sensor (G70)
P0104 - 001 - Intermittent - Intermittent
Freeze Frame:
Fault Status: 00100001
Fault Priority: 0
Fault Frequency: 1
Mileage: 260844 km
Time Indication: 0

Freeze Frame:
RPM: 168 /min
Torque: 167.7 Nm
Speed: 0.0 km/h
Duty Cycle: 80.9 %
Voltage: 9.50 V
Absolute Pres.: 999.6 mbar
(no units): 0.0

000258 - Mass Air Flow Sensor (G70)
P0102 - 001 - Signal too Low - Intermittent
Freeze Frame:
Fault Status: 00100001
Fault Priority: 0
Fault Frequency: 1
Mileage: 260844 km
Time Indication: 0
Date: 2019.06.25
Time: 19:27:38

Freeze Frame:
RPM: 756 /min
Torque: 66.3 Nm
Speed: 0.0 km/h
Duty Cycle: 80.9 %
Voltage: 12.31 V
Absolute Pres.: 1009.8 mbar
(no units): 84.6


Readiness: 0 0 0 0 0

Ignore the MAF errors, I pulled the MAF to see if that was faulty.

So I’ve got a fault between the turbo actuator and the ECU? Can barely even see the turbo behind the engine, does anyone know where the engine ECU is located?

All the best. John.

For anyone who gives a monkey’s or anyone who encounters this themselves in the future....

It’s a very common issue on VAG TDi wastegates. They get full of carbon. Actuator was having a hard time as the pivot on the waste gate had become stiff one end of its travel.

Used some turbo cleaner spray on the intake side. Expected to have to use it on the exhaust side, but haven’t needed too. Pulls like a train once more.