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Originally Posted by M.B.DOC
Just to amplify... BANK 1 on a Mercedes engine (V6/V8/V12) is the RIGHT side (passenger) USA version.
ALSO fuel trim codes rarely suggest O2 sensor problems but instead mean that the computer has gone to an adjustment level that can't be changed by O2 sensor inputs.
There are also 10-20 O2 codes that start with P1 instead of P0 & those codes vary from car to car/ fuel system to fuel system.
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Well, that is interesting.
I was reading a thread in the BenzWorld site. the owner of a 1998 E320 pulled codes P0156 and P0161. His mechanic changed the right hand side (passenger) post cat O2 sensor. Seems that he should have replaced the left side O2 sensor.
Another poster had the same codes and his mechanic changed the right side post cat O2 sensor. He should also have changed the left side O2 sensor.
Two different mechanics both making the same mistake (replacing the wrong side O2 sensor).
What is going on here?
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Current Benzes
1989 300TE "Alice"
1990 300CE "Sam Spade"
1991 300CE "Beowulf" RIP (06.1991 - 10.10.2007)
1998 E320 "Orson"
2002 C320 Wagon "Molly Fox"
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