Service & Repair Manual

24-110
If specified value in display group 037 and
038 display field 3 or 4 is not obtained:
- Search for leaking air at exhaust system or
catalytic converter (check screw clamps and
exhaust system for damage).
- Check if possibly the oxygen sensors behind
catalytic converter of cylinder bank 1 and 2 have
been switched, in case of extremely different
values (e.g. +500 ms, - 500 ms) of display fields
3 (oxygen sensor correction value) in the
measuring value blocks 037 and 038.
If none of the listed causes applies:
- Replace respective oxygen sensor -before-
catalytic converter
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