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Diesel Particle Filter (DPF) Service
The Diesel Particle Filter (DPF) function manages DPF regeneration, DPF
component replacement teach-in and DPF teach-in after replacing the
engine control unit.
The ECM monitors driving style and selects a suitable time to employ
regeneration. Cars driven a lot at idling speed and low load will attempt to
regenerate earlier than cars driven more with high load and speed. In order
for regeneration to take place, a prolonged high exhaust temperature must
be obtained.
In the event of the car being driven in such a way 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.
Before performing a forced DPF regeneration using the tool, check the
following items:
The fuel light is not on.
No DPF-relevant faults are stored in system.
The vehicle has the correct spec engine oil.
The oil for diesel is not contaminated.
Before diagnosing a problem vehicle and attempting to perform an
emergency regeneration, it is important to obtain a full diagnostic log and
read out relevant measured value blocks.
1. The DPF will not regenerate if the engine management light is on, or
there is a faulty EGR valve.
2. The ECU must be re-adapted when replacing the DPF and when topping
up the fuel additive Eolys.
3. If the vehicle needs to be driven in order to perform a DPF service, a
second person is needed for the function. One person should drive
NOTE
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