BMW DTC P2459 – Particulate Filter Regeneration Frequency (Bank 1)
DTC P2459 meaning on BMW
DTC P2459 on a BMW indicates an issue with the Particulate Filter Regeneration Frequency for Bank 1. This diagnostic trouble code is related to the diesel particulate filter system and its regeneration process.
BMW DTC P2459 symptoms
Symptoms of DTC P2459 on a BMW may include reduced engine performance, decreased fuel efficiency, black smoke from the exhaust, and the illumination of the check engine light on the dashboard.
BMW DTC P2459 causes
The most common causes of DTC P2459 on a BMW are a faulty diesel particulate filter, issues with the exhaust gas temperature sensor, clogged or contaminated filter, or problems with the regeneration system itself.
BMW DTC P2459 seriousness
Ignoring DTC P2459 on a BMW can lead to further damage to the engine and emission control system. Continued driving with this fault can result in increased emissions, reduced engine efficiency, and potential damage to other components.
How to diagnose DTC P2459 on BMW
To diagnose DTC P2459 on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the fault code and then perform a visual inspection of the diesel particulate filter system, exhaust gas temperature sensor, and related components. Testing the regeneration system and monitoring the filter’s condition may also be necessary.
How to fix DTC P2459 on BMW
Fixing DTC P2459 on a BMW may involve replacing the diesel particulate filter, cleaning or replacing the exhaust gas temperature sensor, addressing any clogs or contamination in the filter, or repairing the regeneration system. It is recommended to follow the manufacturer’s repair procedures and guidelines.
How to erase DTC P2459 on BMW
After fixing the underlying issue causing DTC P2459 on a BMW, the fault code can be erased using a diagnostic scanner. By clearing the code, the check engine light should turn off. It is important to ensure that the repair has been successful before clearing the fault code.
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.