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    Audi A4 2.0 ALT 2002 - Poor to no acceleration, codes G186 & J338 - Fixed # Archived Message

    Posted by Paul Chard on August 19, 2010, 4:20 pm

    I have an Audi A4 ALT in the workshop it came in with poor to no acceleration, it had previously been at another garage where they had fitted two coil packs, a throttle body and a throttle pedal, there were three codes stored as well:

    1. Throttle actuator (G186) electrical malfunction lower limits exceeded

    2. Throttle actuator (J338) adaption not started

    3. Throttle valve controller malfunction.

    I have tried to program the TB using the VagCom but in the fourth box where it should say ADP OK it is displaying ERROR.

    It will start up but stall straight away It will run if you hold the butterfly open, which makes me think its not getting the correct supply voltage but I cannot find any information on this engine to know what that voltage should be!

    Has anyone had the same problem?

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