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Old 01-06-2010, 06:46 AM
Liaun Liaun is offline
Registered User
Location: Brunei
Join Date: Feb 2009
Posts: 15
Mein Auto: BMW
Fault codes

There were 2 fault codes found.

Charge-air pressure actuator

4521, 4530
Charge-air pressure control, control deviation

What are the possible faults?
Was it DDE or the charge-air pressure actuator?

I had checked the lines and plug connections. I had checked the power supply voltage from fuse, reads some 12.2V, another power supply from DDE, reads some 11.4V and another voltage signal of 3.5V from DDE.
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