BMW DTC P208B – Reductant Pump ‘A’ Performance/Stuck Off
DTC P208B meaning on BMW
DTC P208B on a BMW indicates an issue with the Reductant Pump ‘A’ performance or that it is stuck off. The reductant pump is responsible for supplying the Diesel Exhaust Fluid (DEF) to the Selective Catalytic Reduction (SCR) system, which helps reduce harmful emissions.
BMW DTC P208B symptoms
Symptoms of DTC P208B on a BMW may include:
- Check Engine Light illuminated
- Reduced engine performance
- Increased fuel consumption
- Difficulty starting the vehicle
BMW DTC P208B causes
Common causes of DTC P208B on a BMW include:
- Defective reductant pump
- Wiring or connector issues
- Software glitches
- Low DEF fluid level
BMW DTC P208B seriousness
Ignoring DTC P208B on a BMW can lead to increased emissions, reduced fuel efficiency, and potential damage to the SCR system. It is important to address this issue promptly to ensure proper vehicle operation and compliance with emissions regulations.
How to diagnose DTC P208B on BMW
To diagnose DTC P208B on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault code
- Inspect the reductant pump for any visible damage or leaks
- Check the wiring and connectors for any signs of wear or corrosion
- Verify the DEF fluid level is adequate
How to fix DTC P208B on BMW
To fix DTC P208B on a BMW, the following steps may be taken:
- Replace the faulty reductant pump if necessary
- Repair any damaged wiring or connectors
- Update the software to the latest version
- Refill the DEF fluid to the proper level
How to erase DTC P208B on BMW
After addressing the underlying issue causing DTC P208B on a BMW, the fault code can be erased using a diagnostic scanner. This will reset the Check Engine Light and allow for monitoring 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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