What does code P1140 mean on BMW vehicles?
The mass air flow sensor circuit reports airflow values outside the expected operating range.
OBD-II Code BMW
P1140 — BMW — Mass or Volume Air Flow Circuit Range/Performance Problem
The mass air flow sensor circuit reports airflow values outside the expected operating range.
Common symptoms
- Loss of power
- poor engine response
Possible causes
- Dirty or faulty MAF sensor
- intake air leaks
Initial recommendation
Clean the MAF sensor and inspect intake system for leaks.
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 P1140 with your vehicle's actual symptoms for more complete diagnostic guidance.
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