BMW DTC P24A4 – Particulate Filter Restriction – Soot Accumulation Too High, Bank 1
DTC P24A4 meaning on BMW
The DTC P24A4 code on a BMW indicates that the particulate filter in Bank 1 is experiencing a restriction due to excessive soot accumulation. This means that the filter is not able to effectively trap and burn off the soot particles, leading to reduced exhaust flow and potential engine performance issues.
BMW DTC P24A4 symptoms
Symptoms of the DTC P24A4 code on a BMW may include:
- Reduced engine power
- Decreased fuel efficiency
- Check Engine Light (CEL) illuminated
- Excessive black smoke from the exhaust
BMW DTC P24A4 causes
The main causes of the DTC P24A4 code on a BMW are:
- Excessive soot accumulation in the particulate filter
- Malfunctioning or clogged particulate filter
- Issues with the exhaust gas recirculation (EGR) system
BMW DTC P24A4 seriousness
The DTC P24A4 code should not be ignored as it can lead to further damage to the engine and emissions system if left unresolved. Continued driving with this code present can result in reduced engine performance and potential engine damage.
How to diagnose DTC P24A4 on BMW
To diagnose the DTC P24A4 code on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the particulate filter for soot accumulation
- Check the EGR system for any malfunctions
- Perform a back pressure test on the exhaust system
How to fix DTC P24A4 on BMW
To fix the DTC P24A4 code on a BMW, the following steps may be taken:
- Clean or replace the particulate filter
- Repair or replace any faulty components in the EGR system
- Perform a forced regeneration of the particulate filter
- Clear the fault codes and reset the Check Engine Light
How to erase DTC P24A4 on BMW
To erase the DTC P24A4 code on a BMW, a diagnostic scanner can be used to clear the fault codes stored in the vehicle’s computer. Once the codes are cleared, the Check Engine Light should turn off. It is important to ensure that the underlying issue causing the code has been addressed before clearing the codes.
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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