A4 B7 3.0TDI (233PS) - Turbo Actuator issue - Help replacing just that rather than Turbo

[JLB_Matic]

Hi !

I have an issue I am reaching out for help with.  98,000 Mile car, totally standard Cabrio with no faults apart from this one.   

Car is fine when driven from cold, Turbo boosts strongly and no smoke etc.    

When car has been left standing and restarted whilst warm or hot, it will normally go into Limp mode and may light up the yellow MIL light.   I have VAGCOM and the following code is consistently coming back:

1 Fault Found:
013128 - Control Circuit for Controller for Turbocharger 1 (J724) 
               P3348 - 005 - Electrical Malfunction - Intermittent

From the Ross-Tech wiki:

19804/P3348/013128 - Control Circuit for Controller for Turbocharger 1 (J724): Electrical Malfunction

Possible Symptoms

• Malfunction Indicator Light (MIL) ON

Possible Causes

• Fuse(s) faulty
• Wiring and/or Connector(s) from/to Controller for Turbocharger 1 (J724) faulty
• Controller for Turbocharger 1 (J724) faulty
• Faulty Turbocharger

Possible Solutions

• Check Fuse(s)
• Check Wiring and/or Connector(s) from/to Controller for Turbocharger 1 (J724)
• Check/Replace Controller for Turbocharger 1 (J724)
  • Perform (Selective) Output Test, the Vane Positions should change visibly and audibly
  • Perform System Test using VAS 6395
    • See TPI 2016032 for additional information when this DTC is found in vehicles with Siemens E-regulators. That document lists specific environmental conditions shown by the VAS 6395 tool that may help determine if the E-regulator -or- mechanical components such as the Turbocharger itself are faulty.

 

 

 

After much web-searching it sounds like I need a new actuator BUT this needs a special tool to calibrate it :  "It appears a new actuator does need programming to learn the limits and this is a once only operation . If it's done wrong the actuator is a bin job."    Actuator is Borg Warner 059 145 725E on a KKK BV50 Turbo.

Thank you ever so much for any information or guidance on obtaining a calibrated actuator.   I'm sure there are loads of 3.0TDi owners out there with the same issue.

 

 

 

BV50 actuator replacement (1).pdf

[JLB_Matic]

Hi all... anyone got any ideas on this please???     Thanks.

[rodhodgson]

Same problem on my Q7, did you get a resolution? Thanks