Shrewdy66

Hopefully its all sorted now. I fitted a new G450 pressure sensor and the EMS light went out. Took it to the garage to get the new sensor adapted (apparently its required because the new sensor needs to know what the ash mass level is in the DPF) anyway the guy checked the level and it was around 35% and there was too much pressure coming back from the DPF so he set the ECU to regen mode and put some DPF cleaner directly into the fuel filter and i took it for a good run (2K revs in 4th gear for 15mins) the DPF warning light went out and then he reset the ECU to show a new DPF had been fitted and also tell the ECU a new sensor had been fitted.........so far so good :)

Thanks James, i'll take a look.................just concerned about driving it before the adaption. Hopefully this will sort things out :)

Update........I ran a full tank through with a DPF cleaner and the light went out for a couple of days but now its back on.............suspected G450 Pressure sensor fault so i'm going to change that today. I have the car booked into the local garage for the sensor to be put through the 'adaption' process using the VCDS software but i'm wondering if it will be OK to drive the car to the garage after replacing the sensor or does the adaption process need to take place before starting the car? Thanks Phil (ps, the brake light is sorted....didin't realise it had 2 bulbs either side my bad!

Hi Guys, i'm about to replace a suspected faulty G450 Pressure sensor on my Audi A3 1.9TDi and then take it to my local garage to have the sensor 'adapted'. I'm now wondering if it will be OK to drive the car to the garage after the sensor has been changed or does the 'adaption' process needs to be done immediately after changing the sensor i.e before starting the car? Any help would be appreciated Thanks Phil

Unfortunately not, hooked it up to a fault code reader and it returned a code that said the Exhaust Pressure Sensor high......reset the fault after checking the pipes on the sensor but it came back on the next day. Think I'm gonna take it in for a forced regen and take it from there. the blown brake light warning is still alerting me but after looking it seems the Reg plate bulb has blown so might be the cause of the warning

Thanks for the advice. The Emission Control Light is staying on all the time after having a fuel drain (put petrol in a diesel situation) so I'm gonna try the battery disconnect/reconnect to see if it resets. Fingers crossed

What can be expected after disconnecting the battery? Is there a way to get an error code without having a code reader?

No, he just did the drain, I'm actually considering disconnecting the battery to see if it resets everything but not sure what to expect afterwards

Hi, Looking for a bit of advice before I take my car to the garage. About 6 weeks ago my wife filled up with petrol instead of diesel and managed to drive for about a mile before the car stalled. She called fuel doctor who did the drain and she refilled with diesel. Now, the engine management warning light is on permanently and i'm getting a variety of weird issues....namely: The electric windows work intermittently, either they work or nothing happens when I try them a few times or they don't go fully down or up after holding the button. Then i'm getting a 'brake light failure' warning on the dash even though the brake lights are fine. The other thing to mention is that before the 'wrong fuel was put in I would get the DPF warning come on after around 2 to 3 weeks of normal driving but since filling up and driving the car with the wrong fuel in the DPF warning light has not been back on... What can be done to get everything back to normal? Is it as easy as resetting the engine management system or something else? Any advice would be appreciated Thanks

Hi All, I have an AUDI A3 1.9 e TDi Sportback 2009 73k miles, full service history and as this is my first diesel car (and first Audi) I was a little concerned when I read in the manual about the DPF becoming clogged due to 'urban driving' I have read a lot of information regarding the lifespan of the DPF and of course the ways in which the soot particulates are 'burnt off' in both passive and active methods. Either running the car for 15-20 mins at RPM > 3k to help clear the filter etc. Inevitably after a week of driving the car in the same manner that we did our previous petrol engine car the DPF warning light came on. As per the instructions in the manual we gave the car a good run at higher revs and yes, the warning light has gone off. I have read in other forums about diesel owners with DPF's using a variety of additives that are used when refuelling (Wynns Diesel Particulate Filter Cleaner, JLM products or even 2-stroke oil) also about people using certain brands of diesel (city diesel, V Power, BP etc) or high cetane fuels I am keen to get feedback from the real experts (you guys, the owners) on what are the best methods for prolonging the life and cleanliness of my DPF, which additives, driving techniques, fuels to use etc many thanks