Engine-ECU uses this voltage for DPF regeneration control. The No. 3 exhaust gas temperature sensor (DPF temperature) is a kind of resistor, which has characteristics to reduce its resistance as the DPF temperature rises. Therefore, the sensor output voltage varies with the DPF temperature, and becomes lower as the DPF temperature rises.

As a result, your DPF light may flash before you reach the next 7,000 miles. I would reset the DPF with an oil change. Then on your first drive, do the injectors calibration after you stop. Do that only if the DPF is not regenerating at this point. Otherwise wait to do the calibration on the next drive. Do not do the forced DPF regeneration. According to Mazda Australia, the cost of servicing a petrol-fuel Mazda CX-5 Akera is $1,561. In comparison, the cost of servicing the diesel version is $1,717. Even though the cost of servicing a diesel engine is slightly higher than petrol, the benefits of owning a diesel vehicle far outweigh the costs of servicing it. 2. Connect the pin in the red circle (in the pic below) to earth (chassis). 3. Press the accelerator to the floor and release 2 times. 4. The engine RPMs will increase to around 1850 automatically. If it does not, the regen has not started and you need to start back at point (2) 5. The DPF forced regen process will take between 40 and 80 mins There is only so many times a DPF can regenerate before the compacted soot reaches a critical saturation level at which point DPF removal or replacement is imminent. Eurotune have DPF solutions starting from just $395+GST . Call us today. DPF clean, repair, remove, delete and/or replace Diesel Particulate Filter (DPF) systems. ― When the warning light turns on or flashes, repeat the procedure from Step 5 (start the engine). — 15 Verify that the learning value (O2S11_CAL) for the A/F sensor is other than 0. • If the learning value (02S11_CAL) for the A/F sensor is 0, repeat the procedure from Step 5 (start the engine). — 16 Clear the DTCs. A flashing orange DPF light (or whatever the primary activation mode is) just tells you that the filter is getting loaded up, and a burn or regeneration is necessary and/or overdue. The car knows this because it measures the pressure drop across the DPF. More pressure drop equals more clogging equals need to regenerate now.
the DPF. 7.3. The Engine Power Is Reduced message will be displayed. The engine WILL operate in reduced engine power when this occurs. 7.4. Once this occurs, self cleaning of the DPF is no longer possible and dealer service will be necessary. 7.5. Possible irreversible damage to the DPF may occur, requiring repair or replacement.
Mazda finally fixed the re-gen issue with firmware EU 59.00.502. If you're on an earlier version then you'll continue to have the issues you describe. The very latest firmware version is EU 59.00.532 but really, as long as you're on EU 59.00.502 (or the latest EU 59.00.532), you will see an end to these bloody re-gen, oil contamination issues
oTd2.
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    • mazda 5 dpf regeneration procedure