2010 BMW 6 Series 160K miles
Hi,
My engine light is on.
Fail message :
bank 1 and bank 2 readings bad
- replaced all 4 O2 sensors same fail codes ?
Also once in while maybe 1,2 a month my car smokes blue smoke for 20 seconds and stops
Specially if I reset the error codes.
Please advise.
Changing Lambda sensors against a mixture error is a bit like changing the temperature sensor when the engine overheats - you are treating the symptom not the cause. Have a read of these:
https://www.meeknet.co.uk/E38/Diagnostics.htm
Timm..2007 E64 650i Individual Sport..1999 E31 840ci Individual Sport..ex owner of 2000 E38 740..1999 E38 740i V8 M62..1998 E38 735i V8..1993 E32 730i V8..1988 E28 518i
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Check the diaphragms on the valve covers for tears, check get the oil to 10w60 m oil. And when your pulling faults until you perform the correct diagnosis they are just information on what to do, oxygen sensor faults more times then not are only setting faults because there reacting to something up stream.
Did u find out what was the problem
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