What the workshop should distinguish
The reported symptoms include rough running, an engine warning light or cranking without starting. The bulletin calls for checking the sensor connector and the DME-side wiring for oil. If that contamination is absent, its repair branch does not apply: continue the diagnostic test plan.
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Useful information before inspection
Identify the application
Save the VIN, engine identification and a full fault report. A chassis nickname such as E9X cannot distinguish all the engines in this generation.
Record what changed
Note whether the problem followed valve-cover work, plug or coil work, a jump start, or no obvious event. Keep the first symptom separate from any faults that appeared after parts were disconnected.
Avoid the parts cascade
Ask for the actual findings at the connectors and wiring before authorizing a sensor, harness or control-unit repair. The extent of contamination matters; one fault label is not proof that the entire system is damaged.
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After diagnosis
Keep the measured findings and repair record. If the same complaint returns, those details are more useful than a list of parts already replaced.
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- BMW — SI B11 06 16, April 2016 ↗Reviewed Sep 27, 2026
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