Volvo XC70 won't start

My Volvo XC70 D5 (2010) Auto continually refuses to start. I have had a new fuel pump fitted, but the problem persists. The car is back with the dealer after being recovered yesterday. The engine turns over but refuses to fire.
What do you think the problem could be?

Asked on 13 May 2014 by Willow14

Answered by Honest John
If it isn't the low pressure fuel tank sender pump itself, it might be its earth, it might be the electrical relay to the pump, or it might be the earth to the relay. Diagnostics only ever shows low fuel pressure. it does not pinpoint why.
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