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6.6 DPF/GPF
The Diesel Particle Filter (DPF) function manages DPF regeneration, DPF component
replacement teach-in, and DPF teach-in after replacing the ECM.
The ECM monitors driving style and selects a suitable time to employ regeneration.
Vehicles driven a lot at idling speed and low load will attempt to regenerate earlier
than vehicles driven more with higher load and speed. For regeneration to take
place, a prolonged high exhaust temperature must be obtained.
In the event of the car being driven in such ways that regeneration is not possible,
i.e., frequent short journeys, a diagnostic trouble code will eventually be registered
in addition to the DPF light and "Check Engine" indicators displaying. A service
regeneration can be requested in the workshop using the Diagnostic Tool.
DPF regeneration is used to clear PM (Particulate Matter) from the DPF filter through
continuous combustion oxidation mode (such as high-temperature heating
combustion, fuel additive or catalyst reduce PM ignition combustion) to stabilize the
filter performance.