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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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Old 12-03-2012, 04:10 PM
Talh3 Talh3 is offline
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Location: Atlanta ga
Join Date: Nov 2012
Posts: 14
Mein Auto: 1997 540i
Help!!!!! Knock sensor and fuel trim codes

I installed a new thermostat last week, last night I finished replacing my valley pan , oil seperator and back hoses. Now I am having codes from the peak meter that weren't there before!! They are 06 , d4 knock sensor cylinder 5-6 , 06, 1b fuel trim ol additive cylinder 1-4, 06 , 23 fuel trim ol additive cylinder 5-8. Someone please help! Also will it hurt to drive the car with these codes? It seems to be running good. I am also still bleeding the system . Thanks , Tal.
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