BMW DTC P1117 – Mass or Volume Air Flow Circuit Circuit Low (Bank 2)
DTC P1117 meaning on BMW
The DTC P1117 code on a BMW indicates an issue with the Mass or Volume Air Flow Circuit being too low in Bank 2. This means that the engine control module (ECM) has detected a lower than expected airflow reading from the sensor in Bank 2 of the engine.
BMW DTC P1117 symptoms
Symptoms of a DTC P1117 on a BMW may include:
- Check Engine Light illuminated
- Reduced engine performance
- Engine stalling or hesitation
- Increased fuel consumption
BMW DTC P1117 causes
Common causes of a DTC P1117 on a BMW include:
- Faulty Mass Air Flow (MAF) sensor
- Intake air leaks
- Dirty or clogged air filter
- Wiring or connector issues in the MAF sensor circuit
BMW DTC P1117 seriousness
While a DTC P1117 may not cause immediate engine failure, it can lead to reduced engine performance and fuel efficiency. Ignoring this code can potentially cause further damage to the engine over time.
How to diagnose DTC P1117 on BMW
To diagnose a DTC P1117 on a BMW, you can:
- Use a diagnostic scanner to read the fault codes
- Inspect the MAF sensor and its wiring for any visible damage
- Check for any intake air leaks
- Clean or replace the air filter
How to fix DTC P1117 on BMW
To fix a DTC P1117 on a BMW, you can:
- Replace the faulty MAF sensor
- Repair any damaged wiring or connectors in the MAF sensor circuit
- Fix any intake air leaks
- Clean or replace the air filter
How to erase DTC P1117 on BMW
To erase a DTC P1117 on a BMW, you can:
- Use a diagnostic scanner to clear the fault codes
- After fixing the underlying issue, reset the ECM by disconnecting the battery for a few minutes
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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