P116D – BMW DTC

BMW DTC P116D – Air Mass Flow Sensor Signal Gradient Error

DTC P116D meaning on BMW

DTC P116D on a BMW indicates an Air Mass Flow Sensor Signal Gradient Error. This fault code is triggered when the Engine Control Module (ECM) detects that the signal gradient of the air mass flow sensor is not within the expected range.

BMW DTC P116D symptoms

Symptoms of BMW DTC P116D may include:

• Check Engine Light (MIL) illuminated
• Reduced engine performance
• Poor fuel efficiency
• Engine stalling or hesitation

BMW DTC P116D causes

Common causes of BMW DTC P116D include:

• Dirty or faulty air mass flow sensor
• Wiring or connector issues in the air mass flow sensor circuit
• Air intake system leaks or restrictions
• Software or calibration issues in the ECM

BMW DTC P116D seriousness

While BMW DTC P116D may not cause immediate drivability issues, it can lead to poor engine performance and reduced fuel efficiency if left unresolved. Ignoring this fault code may also result in potential damage to other engine components over time.

How to diagnose DTC P116D on BMW

To diagnose BMW DTC P116D, you can perform the following steps:

1. Use a diagnostic scanner to retrieve the fault code and freeze frame data
2. Inspect the air mass flow sensor for dirt or damage
3. Check the wiring and connectors in the air mass flow sensor circuit for any issues
4. Inspect the air intake system for leaks or restrictions
5. Perform a visual inspection of the ECM for any signs of damage

How to fix DTC P116D on BMW

To fix BMW DTC P116D, you can try the following solutions:

1. Clean or replace the air mass flow sensor if dirty or faulty
2. Repair any wiring or connector issues in the air mass flow sensor circuit
3. Fix any leaks or restrictions in the air intake system
4. Update the ECM software or perform a calibration if necessary

How to erase DTC P116D on BMW

To erase BMW DTC P116D, you can use a diagnostic scanner to clear the fault code from the ECM’s memory. After fixing the underlying issue causing the fault code, you can reset the ECM and drive the vehicle to see if the code reappears. If the fault is successfully resolved, the DTC P116D should no longer trigger the Check Engine Light.

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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