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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 to reduce PM ignition
combustion) to stabilize the filter performance.
DPF regeneration may be performed in the following cases:
⚫ The exhaust back pressure sensor is replaced.
⚫ The PM trap is removed or replaced.
⚫ The fuel additive nozzle is removed or replaced.
⚫ The catalytic oxidizer is removed or replaced.
⚫ The DPF regeneration MIL is on and maintenance is performed.
⚫ The DPF regeneration control module is replaced.
The operation guidelines of the DPF function are shown below:
1. Enter the DPF menu and choose relevant models according to the vehicle being tested.
2. Enter the DPF regeneration menu.
3. Read carefully and complete the requisites listed before performing the DPF regeneration function. And
press OK after completing the instructions shown.
Figure 5-10 Sample of DPF function (screen 1)
4. Read the fuel tank level and make sure that it fulfills the requirement displayed.
5. Read the carbon deposit load.
6. Choose the drive to warm up and follow the instructions listed below. And press OK after completing the
instructions shown.
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