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There isn't an issue, mine does the same, I've done 20k miles and not had a regen problem, if the car drives fine and there's no regen error codes it's normal.
Further on from this I checked my dpf sensor levels and they're not too good 27hpa at idle, 70hpa at 2500rpm and jumps to low 200hpa with a good rev.I've put a bottle of redex 'snake oil' dpf cleaner in, after about 1/4 of a tank the idle is down to 17hpa, at 2500rpm around 50hpa and low 100s at a full rev so contrary to popular belief it seems to have done something.Soot level went up 0.4g in 6 miles which puts me around 100 miles till it regens, not perfect but better.I've got a can of foam dpf cleaner on order to inject into the top of the dpf through the sensor pipe, if that doesn't fix it, it's coming off for a manual clean but so far so good.
Further on, the soot level is now going up slower and to a higher level, think I've fixed it but will know more after another few hundred miles.It now looks like it will be regenerating at a suitable mileage/time, just waiting for the next regen.
Quote from: I30 GD on September 16, 2024, 14:35:23Further on, the soot level is now going up slower and to a higher level, think I've fixed it but will know more after another few hundred miles.It now looks like it will be regenerating at a suitable mileage/time, just waiting for the next regen. Curious if you have any update yet?I've just bought a car that is suffering from this same issue (approx 130km between regens), it was left unused for 18 months before I bought it - Wondering if that could be a factor.
What did you do to the ECU after cleaning the DPF?
Quote from: I30 GD on October 16, 2024, 22:39:13What did you do to the ECU after cleaning the DPF?Nothing. There is possibility to reset DPF in ECU with more advanced diagnostic tools - if I remember correctly there is menu for reseting certain parts after new installation, and warning that you should reset the part otherwise the errors and suboptimal functioning may continue until ECU relearns. I don't have such tools so I just let it relearn and I think I does not take a lot of time to do it.By the way, when my DPF was full of ash I didn't receive any errors either - just regeneration every 20-30 km and plus 2 liters of oil/diesel in crankcase in 2.5 month.
I've not had any luck - Had a separate issue where power was down and fuel consumption up - EGR error code was present. So had the egr temporarily deleted (software) as a test (the garage said this was likely the cause of both the EGR and DPF frequent regens, as he saw no issues with the DPF pressure differential readings).EGR issues immediately disappeared, so it must have been clogged, but no difference to the frequent DPF regens. Not sure what to do next really - Maybe replacing the EGR will resolve the DPF issues, the garage was adamant that the DPF is fine.
I've finally found a way to retrieve the dpf sensor data , the pressure differential readings:Engine off : 4 hPaIdle : 28 hPa2000 rpm : 90 hPaI'm not sure what to make of these numbers though - Any idea what a healthy baseline would be?
Thanks - This really helps!What was the aftermarket sensor that you used? I'm wondering if this might be the best thing for me to try first, given that I'm seeing 4/5hPa even when the engine is off.My EGR is clogged, as it was throwing an error, down on power and economy, but a software delete immediately resolved these issues. So cleaning the DPF, EGR and inlet manifold sounds wise, but a lot of effort that I'd ideally postpone if a sensor replacement could resolve the regen issue.