hi guys, had a warning light come on my 08 doblo van 1.3.
the AA said it was an egr fault.had a new one fitted and within weeks the light was back on.called the mechanic sprayed and cleaned it but again same prob.
was advised to use Cataclean and touch wood all ok.i use it regularly and no light for more than a year.hope this helps .:worship:

Have used that and it works.

Good call.