What does code P1191 mean on BMW vehicles?
The pre-catalyst fuel trim for Bank 2 exceeds normal adjustment limits.
OBD-II Code BMW
P1191 — BMW — Pre-Catalyst Fuel Trim System Bank 2 Out of Range
The pre-catalyst fuel trim for Bank 2 exceeds normal adjustment limits.
Common symptoms
- Increased fuel consumption
- reduced efficiency
Possible causes
- Faulty injectors
- contaminated MAF sensor
- air intake issues
Initial recommendation
Check fuel injection system and inspect MAF sensor and intake components.
Safety notice
This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine BMW code P1191 with your vehicle's actual symptoms for more complete diagnostic guidance.
Go to the app View more brands