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Bmw n53 2009 big problem!
#1
Working with a bmw n53 2009 that goes bad when it's cold, when it's hot it's going to be perfect.


BMW 3 Series (E91)
3.0litre
2009
N53-B30A
160 kw
siemens continental dme msd81
5wk93724

These error codes have I received:
P0306
p0301
p0300
p0302

The customer has switched to new things:

nox sensor
air mass meter
spread all
ignition coil sticks all
lambdasonder change everyone
high pressure pump
low pressure pump
low pressure sensor
camshaft sensor
vanos valves
temp sensor coolant

The customer has changed the nox sensor and has switched to a new one.

To me it feels like ecu and mosfet is the fault.

Someone who has some good suggestions, the customer has changed soon half the car Smile
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#2
spark plugs?
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