What does code P1188 mean on BMW vehicles?
The fuel control system detects that the air-fuel mixture regulation for Bank 1 (Sensor 1, pre-catalyst) is outside the specified range.
OBD-II Code BMW
P1188 — BMW — Fuel Control (Bank 1 Sensor 1) Fuel Trim Out of Specification
The fuel control system detects that the air-fuel mixture regulation for Bank 1 (Sensor 1, pre-catalyst) is outside the specified range.
Common symptoms
- Loss of engine power
- poor throttle response
Possible causes
- Vacuum leaks
- faulty pre-catalyst O2 sensor
- fuel delivery issues
Initial recommendation
Inspect intake system for vacuum leaks and verify operation of pre-catalyst O2 sensor.
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.
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