BMW DTC P2002 – Particulate Filter Efficiency Below Threshold (Bank 1)
DTC P2002 meaning on BMW
The Diagnostic Trouble Code (DTC) P2002 for BMW indicates that the particulate filter efficiency is below the threshold on Bank 1. This means that the diesel particulate filter (DPF) is not effectively trapping and burning off soot particles as intended, leading to reduced exhaust system efficiency.
BMW DTC P2002 symptoms
Symptoms of DTC P2002 on a BMW may include:
- Check Engine Light (CEL) illuminated on the dashboard
- Reduced engine power or performance
- Increased fuel consumption
- Excessive black smoke from the exhaust
BMW DTC P2002 causes
Common causes of DTC P2002 on a BMW include:
- Clogged or restricted diesel particulate filter (DPF)
- Failed DPF pressure sensor
- Issues with the DPF regeneration system
- Excessive ash accumulation in the DPF
BMW DTC P2002 seriousness
Ignoring DTC P2002 on a BMW can lead to further engine and exhaust system damage over time. Continued driving with a clogged or inefficient DPF can result in reduced fuel efficiency, engine performance issues, and potential long-term damage to engine components.
How to diagnose DTC P2002 on BMW
To diagnose DTC P2002 on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault code and related data
- Inspect the diesel particulate filter for clogs or damage
- Check the DPF pressure sensor for proper operation
- Monitor the DPF regeneration system for any malfunctions
How to fix DTC P2002 on BMW
To fix DTC P2002 on a BMW, the following steps may be taken:
- Clean or replace the diesel particulate filter if clogged
- Replace the DPF pressure sensor if faulty
- Address any issues with the DPF regeneration system
- Perform a forced regeneration of the DPF
How to erase DTC P2002 on BMW
To erase DTC P2002 on a BMW, the fault code can be cleared using a diagnostic scanner. After the underlying issue causing the fault code has been addressed and fixed, the code can be cleared to reset the Check Engine Light and ensure proper operation of the vehicle.
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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