P1626 – BMW DTC

BMW DTC P1626 – Air Mass Flow Sensor Output Stage Error

DTC P1626 meaning on BMW

DTC P1626 on a BMW indicates an Air Mass Flow Sensor Output Stage Error. This fault code is triggered when the engine control module (ECM) detects an issue with the air mass flow sensor’s output signal.

BMW DTC P1626 symptoms

Symptoms of DTC P1626 on a BMW may include:

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

BMW DTC P1626 causes

Common causes of DTC P1626 on a BMW include:

• Defective air mass flow sensor
• Wiring or connector issues in the air mass flow sensor circuit
• ECM software or hardware problems

BMW DTC P1626 seriousness

DTC P1626 should not be ignored as it can lead to poor engine performance and potential drivability issues. It is recommended to address this fault code promptly to prevent further damage to the vehicle.

How to diagnose DTC P1626 on BMW

To diagnose DTC P1626 on a BMW, 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 and its wiring for any visible damage or corrosion
3. Test the air mass flow sensor using a multimeter to check for proper voltage and resistance
4. Check the ECM for any software updates or malfunctions

How to fix DTC P1626 on BMW

To fix DTC P1626 on a BMW, you can try the following solutions:

1. Replace the air mass flow sensor if it is found to be faulty
2. Repair any damaged wiring or connectors in the air mass flow sensor circuit
3. Update the ECM software to the latest version

How to erase DTC P1626 on BMW

To erase DTC P1626 on a BMW, you can use a diagnostic scanner to clear the fault code from the ECM’s memory. After fixing the underlying issue, clearing the code will reset the Check Engine Light and monitor the system for any recurring problems.

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

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.