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turbo pressure regulation solenoid valve control

3K views 2 replies 3 participants last post by  rwb 
#1 ·
Hi


Can anyone help me with this error message please?
when it passes 4000 rpm lights the engine fault but the car is working normally it still has power. And if i drive under 3000 rpm for 2 days the light is turning off automaticaly
I have replaced the diesel filter about 5000 km ago.
It's a 2.0 Hdi FAP
 

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#3 ·
What it says really!
The turbo has a wastegate that's operated by a vacuum supply that is switched by a solenoid valve.
So potential problems are: vacuum leaks, the solenoid valve, the wastegate itself, something electrical.
It could also be a problem with pressure sensors reporting incorrect values, but this is unlikely since the fault description is consistent with the symptoms you describe.
 
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