P111B BMW Possible Causes
- Intake or exhaust leaks
- Faulty mass or volume air flow sensor
- Mass or volume air flow sensor wiring open or short circuit
- Poor electrical connection in mass or volume air flow sensor circuit
How to Fix BMW P111B Code?
Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
Check engine light on (or service engine soon warning light)
P111B BMW Meaning
The engine control module (ECM) monitors the air flow reading through the O2 sensor. The ECM sets the OBDII code when the air flow is outside factory specifications.