Make sure you’re using the correct type of fuel for your vehicle. Some fuels can damage the DPF system. If your DPF warning light is on, there are a few things you can do to try and clear it. First, make sure you’re driving enough to allow the DPF to regenerate. If that doesn’t work, you can try a DPF forced regeneration cycle. Fairfax county VA. TDI. 2009 Jetta wagon DSG 08/08 205k buyback 1/8/18; replaced with 2017 Golf Wagon 4mo 1.8l CXBB. Nov 23, 2015. #11. tcbluejayfan said: I have a 2011 Jetta TDI. My DPF appears to be going as I have the DPF light on as well as the Glow Plug light flashing, and the CEL light on. I dont want to do the DPF/EGR delete as I want to The lights on a Volvo dashboard follow a traffic light colour system: Green: the system is working correctly or is currently in use. Orange: something is not working correctly - take extra care and check it out as soon as possible. Red: there is a serious, and potentially dangerous problem - stop driving as soon as it is safe to do so. 6.4L Power Stroke Diesel - First 6.4 DPF Delete Questions - Owned my first diesel now for a couple months, and now starting to have some questions. I bought a 2008 Ford F-250 CrewCab Lariat with 50,000 miles. Since I it purchased I've put roughly 15,000 miles on the truck, along with some exterior add-on's just to From what I've gathered, as long as you use the right DEF and keep your tank filled 50-100% (no more than 75% in winter due to expansion) and you drive at highway speeds for 30 mins per week (for DPF cleaning) then the system should not fail. Seems ridiculous to assume that this short procedure could make any difference.After all, as the manual says, the DPF light flashing indicates that the DPF requires regeneration by driving for 10-15 minutes at a specified high level of revs to burn off the accumulated particulate. And if you can’t regenerate it, you have to replace it. The problem with DPFs is that they need to ‘regenerate’, which means running the engine at a hot enough temperature to burn off the deposits trapped in the filter. This happens automatically above 40mph, but only if you take your car for a long enough run out. That brings us to why short journeys can be a problem for diesel cars. Code 4D4A triggers a one time warning about about the DPF at exactly 10 minutes after startup. The car basically starts nagging the owner about the DPF at this point and doesn't do anything else. You can clear the message and drive on. Note that the DPF doesn't necessarily need to be replaced yet as long as regenerations are still occurring Exhaust problems can have any number of causes, but with a P2002 trouble code you can usually narrow it down to one of the following: The particulate exhaust filter is broken or clogged. The back pressure sensor is damaged or broken on Bank 1. There is a leak somewhere in the exhaust system as it flows out of Bank 1. Use Top Tier diesel fuel – Lower sulfur content makes regen easier. Drive regularly – Don’t let the vehicle sit unused for weeks. Change oil – Used oil ash can clog the DPF. Address engine issues – Injector problems, bad sensors, etc can impact regen. Consider an additive – Detergents help clean the engine and DPF. Cmq72b.