DaveAber

Things have not really moved on in 3 months, and I'm a bit sad that there's not been any response in 3 months! Having only covered 3000 miles in 12 months, I can see this isn't going to get better on its own! I expect that this car has had "the fix" and I should roll it back. There is a guy close-ish to me who can roll the fix back, but I've not approached him yet. Can the fix be un-done using VAG-COM? I have a cable etc and this VIN is one I have used on that cable before. Cheers DA

Looking for advice if the readings I am seeing are normal, or an issue. Car is a 2012 140 TD Yeti 4x4 with 95000 miles. I've had it about 16 months, and it's been fine. Recently, had a couple of tiny mis-fire 'cough' events driving around town. A couple of weeks ago, the dreaded DPF light came on, which quickly escalated to a flashing DPF and limited power. Managed to clear this with an italian tune up. This was then swiftly followed by an EML the next day. P0403 code reported. Reset this using torque, but watching the EGR Demand vs EGR Error, the errors are high on most occasions, then the EML comes back on, and the EGR seems to be disabled (0% demand, 100% error) I've put a bottle of fuel cleaner through it, which seems to have helped - code cleared using torque and it hasn't come back (yet). Now, surprisingly quickly, the EGR errors are much lower. It does kick up to 60-odd % error briefly during large changes in demand, but for the most part it's behaving. However, there is one condition where the error is 100% every time - driving at full throttle the demand drops to 0% and the error hits 100%. It stays there whilst the throttle is at 100%. In other conditions where there there is 0% EGR demand (foot off the throttle for example) the error drops back to 0%. So, to me this says the EGR can go to 0% when demanded (fully closed I assume) but not under full throttle. Is this a faulty EGR, a reporting issue, or a 'feature' that is common with these? Just weighing up my options at the moment. I tend to do too many short runs and not enough long runs so I know that's part of the problem. If the cleaner keeps the P0403 away, I may just leave it as it is. Or should I be looking at EGR & DPF delete options? I had a look underneath, and of course being a 4x4 means the EGR and DPF are out of sight / reach without a bit of extra stripping down. Cheers Dave