BMW DTC P24A3 – Particulate Filter Restriction – Soot Accumulation Bank 2
DTC P24A3 meaning on BMW
The DTC P24A3 code on a BMW indicates a particulate filter restriction due to soot accumulation in Bank 2. This means that the diesel particulate filter (DPF) in Bank 2 of the exhaust system is becoming clogged with soot, affecting the vehicle’s emissions and performance.
BMW DTC P24A3 symptoms
Symptoms of the DTC P24A3 code on a BMW may include reduced engine power, decreased fuel efficiency, black smoke from the exhaust, and the illumination of the check engine light on the dashboard.
BMW DTC P24A3 causes
The main causes of the DTC P24A3 code on a BMW are prolonged periods of low-speed driving, short trips, or frequent stop-and-go driving conditions. These driving patterns can lead to incomplete regeneration of the DPF, resulting in soot buildup and filter restriction.
BMW DTC P24A3 seriousness
Ignoring the DTC P24A3 code on a BMW can lead to further damage to the engine and emissions system. Continued driving with a clogged DPF can result in increased fuel consumption, reduced engine performance, and potential long-term damage to engine components.
How to diagnose DTC P24A3 on BMW
To diagnose the DTC P24A3 code on a BMW, a diagnostic scan tool can be used to retrieve the fault codes stored in the vehicle’s engine control module (ECM). Additionally, a visual inspection of the DPF in Bank 2 can help determine the level of soot accumulation and restriction.
Possible diagnostic steps include checking the DPF pressure sensor readings, monitoring the regeneration process, and inspecting the exhaust system for leaks or damage.
How to fix DTC P24A3 on BMW
Fixing the DTC P24A3 code on a BMW typically involves addressing the root cause of the soot accumulation in the DPF. This may include performing a forced regeneration of the DPF to burn off the accumulated soot and restore proper function.
Other potential fixes include replacing the DPF if it is severely clogged or damaged, addressing any underlying engine issues that may be contributing to the problem, and ensuring the vehicle is driven under conditions that promote proper DPF regeneration.
How to erase DTC P24A3 on BMW
Once the DTC P24A3 code on a BMW has been diagnosed and fixed, it can be erased using a diagnostic scan tool. By clearing the fault codes from the ECM, the check engine light should turn off, indicating that the issue has been resolved.
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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