on September 3, 2010, 6:31 pm, in reply to "Re: citroen berlingo 20 hdi engine light came on and customer found it hard to start, we checked codes "
I would say no, but what about the wiring?
Check the harness for shorts to positive and earth, if all looks good then check and compare the circuits with a scope whilst running. HTH
Regards Mark
Modern cars, Its all wizardry and witchcraft