2000 beetle boost control valve fault

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Albrown
still on the production line
Posts: 20
Joined: Tue Aug 02, 2016 8:32 pm
Passat model: B6

2000 beetle boost control valve fault

Post by Albrown »

Hi, I can't remember the code number but the description is boost controller mechanical fault. The car runs fine but it is putting the engine light on.
The car is a 2000 beetle 1.8t and I'm not exactly sure how the system controls the boost so I'm not sure where to start looking. We borrowed the electrical valve from the top of the engine from another car but the fault is the same.
The symptoms seem to be that the code only comes up if you snap shut the throttle from above half throttle, if you close the throttle slowly no code comes up, it seems to make no difference how quickly you open the throttle either.
Any info on how the boost control system works or advice on the fault would be great.
Many thanks, Al
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