Soot Accumulation and Particle meter (PM) sensor
In new-generation vehicles with Euro 6 engines, various emission control systems are included to comply with environmental standards. These include the Diesel Particulate Filter (DPF), AdBlue system, and Exhaust Gas Recirculation (EGR). While these systems enable the vehicle to operate more cleanly and efficiently, they can sometimes lead to soot accumulation.
What is Soot Accumulation?
Soot accumulation refers to the build-up of unburnt particles in the engine or exhaust system during the combustion process. This situation can lead to a decrease in engine performance, an increase in fuel consumption, and emission values exceeding the standard limits.
Why Does it Happen?
Combustion Chamber: Incomplete combustion of fuel particles in the combustion chamber can form soot.
EGR: The EGR system reintroduces exhaust gases into the combustion chamber, which can sometimes contribute to soot accumulation.
DPF: The DPF captures particles in the exhaust gases, but over time it can become saturated and contribute to soot build-up.
Harmful Effects:
Decrease in engine performance.
Reduction in fuel efficiency.
Increase in exhaust emissions.
Reduced lifespan of components such as DPF and EGR.
Measures to be Taken in Case of Soot Accumulation:
Regular maintenance of the vehicle should be carried out.
Professional cleaning services should be used when soot accumulation is detected.
If necessary, components like DPF and EGR should be replaced.
How is Soot Accumulation Measured?
Soot accumulation can be monitored via the OBD (On-Board Diagnostics) system. Diagnostic tools can check the amount of accumulated soot and the overall status of the system.
Particulate Matter Sensor Failure and Error Codes:
When the particulate matter sensor fails, the vehicle’s computer system can generate various error codes. For example:
P24xx: General error codes related to the particulate filter.
P2463: DPF – Excessive Soot Accumulation.
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