ZakHargz

Thanks for replying. Hmm, that’s an interesting one. At present, do you think this can be ignored? Or would you recommend getting it to a mapping company; and allow them to revert and put a better map on it?

Hey, Im wondering if someone could help / give me some advice and guidance on my issue I seem to be having. Long story cut short; I’ve picked up a A5 2008 2.7tdi; 145k miles. It was fine and one morning there was a hesitation when setting off. I’ve plugged my code reader in and it’s given me the following code: P219500 - O2 signal sensor stuck lean bank 1 sensor 1. I’ve done the following to try and resolve this issue: - Replaced O2 sensor and done adaptation - Replaced MAF and done adaption - Smoke test - Checked fuel injectors Its all coming back fine. The car has had a DPF Delete (before my ownership) and feels like it’s been remapped. Does anyone have any ideas on what could be causing this problem?

Still, even with the battery coded, I can’t understand why that would be causing ESP; ABS and steering wheel light to be on; registering defective? Unfortunately, this is a learning curve for me.

There isn’t any options for battery coding; my vehicle doesn’t support it. Attachments are images uploaded from my iPhone

It was brand new. I don’t believe it needed coding to the car; I can’t see any options for this in my diagnostic machine. I have the same codes as before starting work on the car. I have noticed this though: IMG_0712.mov IMG_0711.dngIMG_0705.dngIMG_0707.dngIMG_0706.dngIMG_0709.dng IMG_0708.dng

Sorry for the long awaited reply back; had a few personal issues to contend with. I have replaced the battery (before doing the flywheel replacement). So wouldn’t expect that to cause any issues. I’ve managed to resolve a few of the error codes that were coming up; I’ll update with the latest list shortly.

Hey Jasonj, Todays update: 1. Low/High beams are now working as they should, along with the reverse lights. Final piece is license plate lights which look goosed, so I’ll get some off Amazon and replace those tomorrow. 2. Still some codes on the Topdon… Codes: 03 - Brake Electronics - 00493 ESP-Sensor - Defective 08 - Climate Control Module - 00819 / 01952 - Open or short to ground 17 - Instrument Cluster - 00562 - Open or short to ground 44 - Power Steering - 00778 - No message with this one? 76 - Parking Aid - 01549/00576 I’m not sure which I should begin with.

I’ve removed the HIDs and installed a cheap H7 bulb but I think they were installed as full beam; the actual headlights don’t work and I have no idea why! I’ve too pulled out the radio; removed all the aftermarket rubbish they’d installed which is beyond a joke! Still coming back with the same problems. I’ve bought a new brake light bulb, but since I’m on my own I can’t determine if this is actually a problem, or the car is throwing a wild code; but it doesn’t appear all the time!

Hey Jasonj, Some interesting points you’ve raised there; 1. Would you be concerned about the rattle of the engine when it starts (video above) 2. It’s had some HIDs installed which to be frank, are poor and don’t work; they’re barely noticeable in the dark; I’ll 100% be taking these out and putting standard bulbs back in. 3. I can’t say for certain if the EGR blanking plate (only at the front, not blanked the cooler, I’ve unplugged the EGR too) has worked, but it’s defo performing as it should! I still think it has a map on the car; but it’s the first I’ve driven of this type. 4. It did have wires running from the radio to the back where it looks like a sub was installed! I’ve ripped the power cable out, and yet to remove the radio and pull the remainder, this may cause less obstruction on the electrical side, but I won’t know until I do this. 5. As before, I still have similar codes on the Topdon. I’ll let the bus system sleep and grab the codes in the morning. Note: It looks like I need a new rear wiper motor which I’ll pickup soon; but this shouldn’t cause any issues… I wouldn’t have though. Thank you for helping me over the past few days; it’s certainly been a great help in getting this back up and running!

Not sure if this is related, but it came up on the dash; brake light 🤷‍♂️ Wondering if these electrical faults could be down to brake light switch? I’ve read on other forums it’s common.

So, I’ve had a bit more of a play around with the car today; and I defo think it has a tune. I’ve blanked off the EGR and unplugged it; and it ticked over better (I’ll insert clip below). I’m not going to lie, it’s got some right power behind it! Now, here is where it changes again. I’ve noticed that when I drive, my throttle response is immediate! and the DSG will change from 2nd to 3rd to 4th when I hit 4000rpm, now my question is; why doesn’t it change up gears when I’m light on the throttle; say 2000rpm? Would this be down to the tune; it’s poor and could do with a TCU tune for it to match? I still have my list of electrical faults, but I can fix them as and when, as long as it drives. Here is the startup… IMG_0603.mov

Found the issue to my leak, the pipe had popped off the throttle body, those C clamps are a nightmare. Unfortunately, when testing the driving ability, it’s reluctant to go into third, and instantly downshifts back to second, and revs increase to near 4000. I have to intervene and use the paddle to shift up. It’s still lacking response from the throttle. I’m at wits end with this car now!

Yes, it was running better, but wasn’t picking up throttle as it should. I plugged in the rocker cover hose (at the back near the turbo) and the intake hose, revved better but drove as the video above. I’ll give it another look over in the morning and see what I can find; I’ll play about with it and see if I can spot anything else. I’ll record the video as mentioned.

IMG_0598.mov

I’ve been playing around with it today, looked like I didn’t plug in a small hose behind the rocker cover; I’ve done that and added the hose to the air intake box. The car is now driving lumpy, I’ve recorded a video and you can hear it, sounds like it starved of air. The car has only had a new flywheel, not a new DSG gearbox. It does this in forward and reverse.