I was wondering how long would it take for the PCM and DPF regens to adapt/calibrate to any changes.
My history is that some weeks back it started doing regens very often, like every 90-100km.
Garage could not find anything wrong so we changed the exhaust pressure sensor and reset calibration for it. Still no change, still doing regens every 100km, if driven hard on the open road could even make it regen after 70km.
Then shortly after the car started acting up with lower power at times and turbo lag. And almost no power during regens. Tracked that down to the turbo actuator solenoid.
Replaced that and my god what a difference. Even at startup the car is smoother, very smooth acceleration, and the low down torque...I don't think it ever had it, as I have the car for little over 1 year, but I never remember it being so smooth in the lower rev range.
So everything is running great again, couldn't be happier with it.
But the damn regens still happen every 100km. It looks like they start climbing up at times, but then still get them every 100km, and that's on steady open road runs.
Thought ok, pressure sensor was changed, the solenoid was not working well for god knows how long, there is also the transition from winter to summer fuel, engine got back to running well again after the solenoid change....maybe it takes time to adapt....
But I think I've already gone trough 2 full tanks of fuel and regens are the same.
I'm very confident there are no issues with the engine or DPF. Would it take even longer than this to adjust? Maybe removing the negative battery terminal for 30 min could help?