DPF Regeneration, EGR, Injectors and Limp Mode!
I hate newer cars, emission control and the bluddy hippies that brought them shortsightedly into this world!
I have a 2007 159 2.4 JTD , which refuses to stay out of limp mode for barely a minute or two, and will not idle smoothly at all.
I have done a DPF regeneration 3 times, and it recognises that the dpf is clear according to Multiecuscan, yet repeatedly shows P1206 error code, DPF requires replacing or regenerating, within a minute or two of clearing it.
The poor idle is probably down to injectors being misaligned, but is this a default compensation performed deliberately by the ecu?
If i graph the injector corrections on multi-ecu-scan (MES), 1 and 5 wonder hugely to top and bottom of the scale whilst the remaining 3 are similar across the centre of the range. If i pick up the revs, they come back towards the middle until around 2k and above they sit stable almost together for the remainder of the rev range.
Suspecting EGR aswell, this has been pulled off stripped and cleaned, the plunger is free. It already had a partial blank gasket installed, but it was still very very clogged, and according to MES egr is off, and doesn't seem to come on with revs or blips etc, so does that mean it has been deactivated in the software?
MES shows the egr valve is constantly 4% open?
Any idea's on what next?
Last edited by shellybean; 08-11-15 at 13:39.