My garage fitted a new DPF recently, but the same fault has reoccurred - do they need to fix it?

In June, on long trip, my 2010 Nissan Qashqai+2 lost power and ground to a halt. I got the car back to my local garage who fitted a new DPF and EGR on 8 June 2017 (costing £1384). I've been to France and back, (1200 miles) no problem. This weekend we did a 500 mile round trip and the same system light came on. Garage at destination diagnosed DPF and suppressed fault light, so I could finish my visit and drive the 200 miles home. What should I expect my local garage to do? I don't want to pay again. I've done 2300 miles since the new DPF was fitted. I also paid the same local garage £579 for a 90,000 mile service - including timing belt kit and MoT (no problems) on 7 April 2017.
It is normal to need a new DPF at around 90,000 miles because they fill up with ash. Could be that the new DPF is not regenerating correctly because it has not been connected correctly or is not compatible with the car. That's all down to the garage. You have already paid enough. They must now repair your car free of any further charge.
Answered by Honest John on

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