BMW DTC P2628 – O2 Sensor Pumping Current Trim Circuit High (Bank 1 Sensor 1)
DTC P2628 meaning on BMW
The Diagnostic Trouble Code (DTC) P2628 for BMW refers to the O2 Sensor Pumping Current Trim Circuit High on Bank 1 Sensor 1. This code indicates that there is a high voltage condition in the circuit that controls the pumping current of the oxygen sensor located before the catalytic converter on the bank 1 side of the engine.
BMW DTC P2628 symptoms
Symptoms of DTC P2628 on a BMW may include:
- Check Engine Light (CEL) illuminated on the dashboard
- Decreased fuel efficiency
- Engine running rough or misfiring
- Reduced engine performance
BMW DTC P2628 causes
The common causes of DTC P2628 on a BMW include:
- Faulty oxygen sensor
- Wiring or connector issues in the oxygen sensor circuit
- Exhaust leaks near the oxygen sensor
- Engine running rich or lean
BMW DTC P2628 seriousness
While DTC P2628 may not cause immediate drivability issues, it is important to address this code promptly to prevent potential damage to the catalytic converter and ensure optimal engine performance and fuel efficiency.
How to diagnose DTC P2628 on BMW
To diagnose DTC P2628 on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault code and freeze frame data
- Inspect the wiring and connectors in the oxygen sensor circuit for any damage or corrosion
- Check for exhaust leaks near the oxygen sensor
- Test the oxygen sensor using a multimeter or scan tool
How to fix DTC P2628 on BMW
To fix DTC P2628 on a BMW, you can try the following solutions:
- Replace the faulty oxygen sensor
- Repair any damaged wiring or connectors in the oxygen sensor circuit
- Fix any exhaust leaks near the oxygen sensor
- Address any issues causing the engine to run rich or lean
How to erase DTC P2628 on BMW
To erase DTC P2628 on a BMW, you can use a diagnostic scanner to clear the fault code after the underlying issue has been resolved. This will reset the Check Engine Light and allow you to monitor the system for any recurring issues.
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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