stevewah

Hey everyone, hunting a bizarre wiring short on a 2015 Audi A4 2.0 tdi 190ps . and wanted to see if anyone has encountered this specific failure point before I strip the entire loom back. The Core Symptoms: The car was doing an excessive amount of DPF regenerations. On vcds calculated soot mass was always quite high measured 90% of the time is in the negatives which is impossible oil ash at 30g Checking live data showed a permanent 5.7V on the 5V sensor reference line. I got new dpf sensor.after unplugging lots of sensors i Swapped in a second-hand ECU, and the constant 5.7V remains, ruling out a blown internal ECU voltage regulator or bad remap / adblue delete If the reference pin at the back of the DPF pressure sensor is physically depinned/isolated, the operations of the pressure sensor return to normal functions (or pretty much normal functions). The Breakthrough: While troubleshooting, I moved/wiggled the main wiring harness inside the static plenum/cowl chamber (roughly 4 to 8 inches away from where it exits the ECU box). Moving this specific section instantly triggers clicking relays, flashes the glow plug light on the dash, and throws "overvoltage to glow plugs Current Conclusion: It appears a constant 12V supply wire (ignition feed or relay trigger) has chafed, melted, or cross-shorted directly into the 5V reference wire inside that wrapped plenum chamber bundle, back-feeding and overpowering the circuit. My Questions for the Forum: Has anyone seen this bundle short out inside the static plenum chamber before? Is there a sharp factory clip or edge inside there known for slicing the tape? Does anyone happen to know which specific 12V feed runs parallel to the 5V reference line in this exact stretch so I know what color wires to hunt for? Any wiring diagrams for a 2.0 tdi a4 190ps or past experiences with this specific bundle would be massively appreciated!

my map man is happy to take it off as i did not see the adblue prob pop up till we mapped it as to what i have said to dealer is ive updated ecu as i had worrys re the poss adblue map out as when i test drove the car it had adblue prob. i said if all probs was fixed i was happy to buy they said it needed new adblue pump ive got this on deposit invoice . but when i picked up car they said the car had come back from being coded

its a 2.0 tdi yes i did a carvertical check . my understanding is its a tank prob egr and dpf are ok and i didnt see the adblue prob pop up untill he had map it . because it had cleared there delete adblue map

well i thought i would treat myself to a stage 1 map on my a4 . well where to start i got the car 3 weeks ago from www.harveyscarcentre.co.uk it had 50k on clock so asked for cambelt / water plump to be done and breaks were low . and also had an adblue prob . was told they would fix all bits befor i picked it up . happy dayz . or maybe not . ive been diving the car for 3 weeks all seemed fine .dropped in to mates garage for him to scan for codes all was looking good so i thought lets get a stage 1 . re map man come out today to map the car and in doing that that adblue prob came back. as in harveys car center had mapped it out and not fixed the adblue prob at all. i dont know what to do at this point i rang them today to kick off . but the big boss was not there till monday hmmmm 😞 . the car said it only had 35 miles till shut down . ive had to pay for the map and £100 to re delete adblue just so i could use it again . its !Removed! me off as payed 14k for the car . and now im unsure how to deal with it

well i thought i would treat myself to a stage 1 map on my a4 . well where to start i got the car 3 weeks ago from www.harveyscarcentre.co.uk it had 50k on clock so asked for cambelt / water plump to be done and breaks were low . and also had an adblue prob . was told they would fix all bits befor i picked it up . happy dayz . or maybe not . ive been diving the car for 3 weeks all seemed fine .dropped in to mates garage for him to scan for codes all was looking good so i thought lets get a stage 1 . re map man come out today to map the car and in doing that that adblue prob came back. as in harveys car center had mapped it out and not fixed the adblue prob at all. i dont know what to do at this point i rang them today to kick off . but the big boss was not there till monday hmmmm 😞 . the car said it only had 35 miles till shut down . ive had to pay for the map and £100 to re delete adblue just so i could use it again . its !Removed! me off as payed 14k for the car . and now im unsure how to deal with it

control module no or wrong adaptation 00003 -17 anyone know what this means everything seems to be working fine but have this code

hi all new here and here is my new ride . audi a4 s line black edition in looking at splitter body kit that mach mine is for competition model even tho it dont say it is on my log book