BMW P1101: Mass Air Flow Circuit Rationality Check Conditions

Is your scanner showing BMW P1101?
No worries. We'll show you what it means and how to deal with it.

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OBD Codex, Administrator

BMW P1101: Mass Air Flow Circuit Rationality Check Conditions

DIY Difficulty Level
Repair Cost
Can I Still Drive?

What Does The BMW P1101 Code Mean?

Engine running, with the system voltage more than 11.0v, and the temperature must be at least 185-degrees (F) and all electrical equipment (A/C, lights, etc) must be off. The DME has detected that the MAF signal was out of a calculated range.

What Are The Potential Causes Of The BMW P1101 Code?

  • Mass air flow (MAF) sensor has failed or is damaged
  • Signal and ground wires of Mass Air Flow (MAF) sensor has short circuited

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> BMW MAF sensor

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

BMW Fault Codes (DTCs), page 7.

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