P2626 – BMW DTC

BMW DTC P2626 – O2 Sensor Pumping Current Trim Circuit/Open (Bank 1 Sensor 1)

DTC P2626 meaning on BMW

The Diagnostic Trouble Code (DTC) P2626 for BMW refers to the O2 Sensor Pumping Current Trim Circuit/Open on Bank 1 Sensor 1. This code indicates that there is an issue with the oxygen sensor’s pumping current trim circuit on the first bank of the engine.

BMW DTC P2626 symptoms

Symptoms of DTC P2626 on a BMW may include:

• Check Engine Light (MIL) illuminated on the dashboard
• Decreased fuel efficiency
• Engine running rough or misfiring
• Reduced engine performance

BMW DTC P2626 causes

Common causes of DTC P2626 on a BMW include:

• Faulty oxygen sensor (Bank 1 Sensor 1)
• Wiring or connector issues in the oxygen sensor circuit
• Exhaust leaks near the oxygen sensor
• Engine running too rich or too lean

BMW DTC P2626 seriousness

While DTC P2626 may not cause immediate drivability issues, it is important to address this code promptly to prevent potential damage to the engine and ensure optimal fuel efficiency.

How to diagnose DTC P2626 on BMW

To diagnose DTC P2626 on a BMW, you can follow these steps:

1. Use an OBD-II scanner to retrieve the fault code and freeze frame data
2. Inspect the wiring and connectors related to Bank 1 Sensor 1
3. Check for exhaust leaks near the oxygen sensor
4. Perform a visual inspection of the oxygen sensor for any physical damage

How to fix DTC P2626 on BMW

To fix DTC P2626 on a BMW, you can try the following:

1. Replace the oxygen sensor (Bank 1 Sensor 1)
2. Repair any damaged wiring or connectors in the oxygen sensor circuit
3. Address any exhaust leaks near the oxygen sensor
4. Ensure the engine is running at the correct air-fuel ratio

How to erase DTC P2626 on BMW

To erase DTC P2626 on a BMW, you can use an OBD-II scanner to clear the fault code after the underlying issue has been resolved. This will reset the Check Engine Light and turn off the MIL on the dashboard.

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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