BMW X5 35D P20E8

billr

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That doesn't look like a valid OBD2 code. Was this vehicle built for the North American market, or some other?
 

kev2

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First thought check DEF fluid.
Did you read and understand your owners manual?
 

billr

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OK, I'll bite... what does "DEF" stand for? Did you find that code P20E8, what is the definition for it?
 

kev2

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This IS BS DEF Diesel Exhaust Fluid... works with DPF (Diesel Particulate filter)......
And BMW translates to BS on the grandest scale...

A solution (DEF) is injected into exhaust gasses to lower Nox - It is a consumable fluid needs refilling as if the BMW crowd is capable.
theory - lower Nox , when injected it promotes conversion to nitrogen and ammonia I believe and do not want to include the system in my mental rolodex.
 

billr

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Got it, that stuff VW wanted to avoid so bad they cheated the emissions regs. Did you find that code?
 
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