DPF regenerations every 35-40 km + P2000 f
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DPF regenerations every 35-40 km + P2000 f
Hello everyone,
I'm trying to find out whether anyone has experienced a similar issue with a 2019 Mazda CX-30 Skyactiv-D 1.8 (116 HP) (same engine that Mazda 3).
The vehicle has started performing DPF regenerations extremely frequently, roughly every 35-40 km (22-25 miles), even after highway driving.
Data collected with Car Scanner:
DPF regeneration every 35-40 km
Soot level before regeneration: 95-100%
Soot level after regeneration: around 44-45%
DPF differential pressure at idle: about 0.5 kPa
EGR commanded and actual values match
MAF readings: about 4-5 g/s at idle and around 100 g/s at 2500 rpm
No noticeable drivability issues
No loss of power
I also get an intermittent fault code:
P2000 – NOx trap efficiency below threshold
My vehicle uses a Lean NOx Trap (LNT) system and does not have AdBlue/SCR.
Mazda dealership checked the car and only stated that the issue is "probably" a NOx sensor, without providing any detailed diagnostic data.
What confuses me is that the DPF differential pressure appears very low, suggesting that the filter is not heavily restricted, yet regenerations occur every 35-40 km.
Has anyone experienced something similar?
If so, what was the actual root cause?
NOx sensor?
LNT (NOx trap) failure?
Excessive ash accumulation in the DPF?
ECU software update?
Something else?
Any feedback would be greatly appreciated.
Thanks.
I'm trying to find out whether anyone has experienced a similar issue with a 2019 Mazda CX-30 Skyactiv-D 1.8 (116 HP) (same engine that Mazda 3).
The vehicle has started performing DPF regenerations extremely frequently, roughly every 35-40 km (22-25 miles), even after highway driving.
Data collected with Car Scanner:
DPF regeneration every 35-40 km
Soot level before regeneration: 95-100%
Soot level after regeneration: around 44-45%
DPF differential pressure at idle: about 0.5 kPa
EGR commanded and actual values match
MAF readings: about 4-5 g/s at idle and around 100 g/s at 2500 rpm
No noticeable drivability issues
No loss of power
I also get an intermittent fault code:
P2000 – NOx trap efficiency below threshold
My vehicle uses a Lean NOx Trap (LNT) system and does not have AdBlue/SCR.
Mazda dealership checked the car and only stated that the issue is "probably" a NOx sensor, without providing any detailed diagnostic data.
What confuses me is that the DPF differential pressure appears very low, suggesting that the filter is not heavily restricted, yet regenerations occur every 35-40 km.
Has anyone experienced something similar?
If so, what was the actual root cause?
NOx sensor?
LNT (NOx trap) failure?
Excessive ash accumulation in the DPF?
ECU software update?
Something else?
Any feedback would be greatly appreciated.
Thanks.
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