Repeated failed forced regens - limp mode

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abarthmultijet
Posts: 116
Joined: 17 Feb 2021, 22:37
Location: Oss, Netherlands

Re: Repeated failed forced regens - limp mode

Post by abarthmultijet » 11 Dec 2021, 17:52

Shame you drilled a hole to the dpf, if you connect the differential sensor hose with a t-piece both to the first connection there should not be a need to drill a hole.
Abarth Punto Evo, Fiat Doblo 263 1.4 t-jet, Audi S4 B8.5, 1.3 Multijet specialist, Uconnect 7 specialist,

Sheffy
Posts: 7
Joined: 26 Nov 2021, 10:31

Re: Repeated failed forced regens - limp mode

Post by Sheffy » 17 Dec 2021, 16:12

Any idea why it's in limp mode still with no EML or DCTs?

Also any idea why it won't regen? Bad software for this ECU or is it a parameter that is out?

shpuncik
Posts: 306
Joined: 19 Oct 2018, 16:43

Re: Repeated failed forced regens - limp mode

Post by shpuncik » 17 Dec 2021, 16:36

Sheffy wrote:
17 Dec 2021, 16:12
Any idea why it's in limp mode still with no EML or DCTs?

Also any idea why it won't regen? Bad software for this ECU or is it a parameter that is out?
maybe someone already "tuned" ECU and that's why you don't see any DTC?

OFF.PAVAN
Posts: 43
Joined: 24 Nov 2021, 15:06

Re: Repeated failed forced regens - limp mode

Post by OFF.PAVAN » 17 Dec 2021, 17:34

Sheffy wrote:
17 Dec 2021, 16:12
Any idea why it's in limp mode still with no EML or DCTs?

Also any idea why it won't regen? Bad software for this ECU or is it a parameter that is out?
if modded ecm try to downgrade to the original and check wich DTCs send out, May be someone turn off faults codes

Sheffy
Posts: 7
Joined: 26 Nov 2021, 10:31

Re: Repeated failed forced regens - limp mode

Post by Sheffy » 18 Dec 2021, 17:29

I meant I wonder if it's a bug with MES?

The ECU map is very likely to be stock as it's previously thrown up codes for EGR and DPF.

Can anything else cause limp mode without a fault code? If the car had previously failed to regen a number of times and then went into limp mode with "engine failure" EML DPF light etc, would this then require a successful forced regen to get out of limp mode?

Thanks

shpuncik
Posts: 306
Joined: 19 Oct 2018, 16:43

Re: Repeated failed forced regens - limp mode

Post by shpuncik » 18 Dec 2021, 18:29

take it for a drive on highway - warm up engine, speed at least 60km/h, rpm at least 3000 and drive for about 10-15km in such conditions. should burn and clean DPF if it's clogged to much.

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