Technical Multijet limp mode - no codes on MES

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Technical Multijet limp mode - no codes on MES

Sheffy

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Nov 1, 2021
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Hi there

I have a 1.9 Doblo 120hp multijet (223) stuck in limp mode. Can't rev over 3500 and no power.

Posting here as the doblo section is quiet and someone suggested this section.

Quick recap:

The car has been stuck in limp mode since purchase.
Car firstly had an egr code, replaced the egr and no difference.
Then found split flexi pipe before the DPF, replaced that.
Cleaned the DPF with brick cleaner. Replaced the DPF EGT sensor. Still no difference and stuck in limp mode.

Only remaining code was glow plugs so had them changed and now no faults showing on MES.

Friend also replaced all vacuum lines to be sure.

When running a forced regen in MES it fails. Initially it was throwing a code for EGT sensor hence we replaced that.

When the forced regen fails MES says "Injected quantities outside permitted range" or something very similar. Is this an injector issue?

We have put on a dpf with a hole in it to see if that rules out blocked dpf.

Does anyone have an idea? We're stumped.
 
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