Does the DPF warning light in my pickup truck mean it's regenerating?

My daughter has bought a three year old Isuzu pickup truck with only 12,000 miles on the clock. The DPF light keeps coming on, the main dealer says that this is normal because it shows that the regeneration system is working. Do you agree or is the filter in need of replacement?

Asked on 26 June 2017 by derek markham

Answered by Honest John

Fill the tank with Shell V-Power Nitro Plus diesel. Take the truck for a 100 mile run keeping the engine between 2000 and 2500rpm as much as possible. If that doesn't clear it, then it needs a forced regeneration. At the end of your run, do not switch off the engine. Get out, sniff the air. If you smell heat/burning then the DPF is actively regenerating. Get back into the truck and drive it another 10 miles for the active regeneration to complete.

Tags: v-power dpf diesel engines vans pick-ups maintenance and servicing premium fuels consumer advice shell diesel car maintenance burning smell regenerating

Similar questions

Does the start/stop mechanism and premium fuel effect the regeneration process?

I stumbled across a couple of issues which seem to do the rounds on various forums, so I thought I'd ask here for a definite answer. One is that the Start-Stop mechanism, as implemented in the Audi A6...

Is there a known issue with blocked injectors in the Citroen DS4?

I have a 2011 Citroen DS4, purchased two years ago. Since January, the engine light keeps coming on and the car will go into limp mode. I had the emissions filter 'fixed' in January by the dealer from...