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Could be leaky injectors. Not suggesting you replace the injectors. You could pull them, clean and replace the copper seating washers. Not sure if there’s an ‘o’ ring on the main mode of the injector too? If you do pull them, replace the bolts, they are stretch bolts and torque to yield, once only. Use a little ceramic grease on refitting. If an injector was damaged, I’d expect a further error code. Any new injector needs to be coded to the car. P0420 error likely to be inefficient catalytic convertor. Not sure any of the off the shelf products work. If it were me, you could try Forté products, including injection cleaners. Another option is to access primary oxygen sensor to inspect the cat itself. A lot of work, yes, but only way to confirm visual inspection with endoscope camera (with light) that works with your phone, just to be sure it’s not broken up. Bear in mind this was a crash damaged car.

Don’t skimp on budget is my advice. I understand you’re looking at B&O, but that needs to dovetail with car model, engine and gearbox and even colour. B&O was expensive feature, so it’s not likely to be found on poverty spec car. If you find B&O, then it’s bound to have leather, folding mirrors, possibly virtual cockpit would be my experience. Retrofitting anything is expensive, and usually you need VCDS to remove codes, even if plug and play. I know this is on an Allroad brochure (2017), but it elaborates on the comfort and sound packs. https://autocatalogarchive.com/wp-content/uploads/2017/09/Audi-A4-Allroad-2017-UK.pdf Trim level aside, you want history and lots of it. On cars that have been on long service intervals, personally I’d give them a wide berth. No oil should be in the car for 18k miles. Be prepared to travel too, once you’ve done your due diligence checks. Additional checks such as Car Vertical which you pay for are useful.

VCDS Hex2, absolutely no question. You can source from Gendan. You get OBD cable and lifetime updates. 3 VIN licence will cover your car, plus whatever you source in the future. Works across VAG range of cars. On air suspension, if you’re fitting yourself, you might even need specific feature to ‘relearn system’ after installation, similar to panoramic sunroof synchronisation or one touch windows. On VW Golf 8 for example, you can’t even swap out rear pads without access to ODIS which is dealer level software, so you can see the way things are going.

Hi. Just wondering if Audi resolved the camera issue? Mine has been in 4 times over the last 18 months and always not fault found. They had the car for four weeks once. Said they’d updated the software and it worked fine for 3 months. it’s just frustrating as you never know if it will work or not then sometimes it’s starts as the blue screen and then after 10 or 15 seconds it’s as it should be

So two weeks in and i am loving my A4. But I want to add my own touches too it. So I want to add an SLine badge to the front grill. Looking through Ebay etc there are so many to choose from. Does anyone know the correct one for the B9.5 with the Hex Grill.

Definitely worth speaking to autologics or Audi retrofits regarding android auto to give you an idea of cost. Check YouTube for buyers guides. Regarding quietness all the cars will have the same sound deadening etc. Check this thread regarding B&O https://www.audiownersclub.com/forums/topic/25250-b-o-is-it-genuine-or-just-a-rip-off/

Could it be a cam sensor or lambda sensor

I'd recommend you speak to your local Audi dealer who will be able to tell you what outstanding recalls you have.

Welcome to the forum you'll find the members on here are a friendly and helpful bunch 🙂 looks lovely 👍

Good luck!

Hi, Hi have audi a3 2014 2.0tdi sline. It suffers with a starting fault. (Intermittent) car turns but sticks then after 2 or 3 turns it starts. Drives fine. I'm having error codes p223700 and p031400. The camshaft position sensor has been changed the belts etc have all been changed. Oxygen sensor has been changed. My fuel flap doesn't lock. I'm thinking I may have an electrical issue. As stated the car maybe fine for a month or two. If I adjust the heaters that work fine it's like it can make the fault happen. Any suggestions ? Thanks in advance

Hi, Hi have audi a3 2014 2.0tdi sline. It suffers with a starting fault. (Intermittent) car turns but sticks then after 2 or 3 turns it starts. Drives fine. I'm having error codes p223700 and p031400. The camshaft position sensor has been changed the belts etc have all been changed. Oxygen sensor has been changed. My fuel flap doesn't lock. I'm thinking I may have an electrical issue. As stated the car maybe fine for a month or two. If I adjust the heaters that work fine it's like it can make the fault happen. Any suggestions ? Thanks in advance

Ayoop folks, well my local garage with whom we have a good relationship (using them for 23 years now) have agreed that as I currently have about 6cm of ground clearance (one passerby said it looks "sick", I said it was very ill ) and even getting off the drive is nigh impossible, they'd drop by with the VCDS setup and scan to see if the fault can be identified.....I'm beginning to suspect one of the legs has given up the ghost but can't tell which one......and jacking the car is gonna be a nightmare but I'll find a way. I'll come back with an update when she's been scanned. Stay tuned folks.....

Try colin ludwell cars in Bristol Had one 2017 252bhp. Great car

Yeah, mechanic replaced power steering column with a used one (costed around ~300 euros all in), haven't seen this issue once ever since.

Bought new sensor from audi and tried to replace it myself. I was able to release the wiring clip but not able to release the clips at either side. Any advice?

Hi Gromlog I have the same isue... did you reslove problem?

Hi everyone, I'm currently a happy owner of an A4 but giving serious consideration to a petrol Q3 Sportback, not sure whether to go for front wheel or quattro drivetrain. Any tips here would be helpful thanks. More importantly, is there anything you discovered after you got your Q3 that you wish you'd known beforehand? Thanks in advance.

Thanks gents for your replies, i’m still investigating the problem, once i have the solution i will put it here although feel free to continue with any advice cheers Dave

on 2017 im getting a fault on antenna to infotainment system in passenger door it says any one got any idears some one said its a recall and can get it sorted for free is the right does any one no ???????

On mine it feels like I'm running low on fuel and the engine is stuttering. The RPMs also judder slightly. As soon as I start accelerating, even lightly, it's gone. In my experience a good way to manifest my problem is by cruising at low speeds (30-50km/h) and just barely feather the accelerator in a lower gear - e.g. 3-4th. No acceleration, just cruising at a consistent speed. I can also let go completely and very lightly press again and it might start doing it. Same happens at higher speeds, but due to the high gear, it's less noticeable. It's worth mentioning that it's not happening every time. Like I previously wrote, it's a bit hit & miss. I have the feeling that it's happening the most when the engine is still not up to temp. I hope this helps.

Okay that’s good news, I thought I would keep you updated with my progress, the seller has removed the injector to find that the copper sealing washer is basically non existent, he has ordered a new sealing kit and is going to replace which will hopefully fix the issues, it is really difficult to fully explain as it’s not full engine misfire just a judder, I would say it feels almost like clutch judder. Needless to say I’ll be taking it on another decent test drive before purchasing it, in your experience is there anything that constantly makes it judder?

I have never had any problems took car out dropped roof electric, all fine went diy store roof still down locked door by key later wen home went to put roof up not happening all solenoid sounds working light on panel flashing then the boot won’t open by key or fob but once again all solenoids clicking working. any help please .ps can I open storage manually. Regards .

Thanks for the tips Gareth - I'll take a look. Here are some more photos of the blower Dave, let me know if any other angles would help. Unfortunately I think the one you found wouldn't fit - if you can see it has the electrical connection in the middle of the fan, whereas on my one the socket is off to the side.

Newbie Audi owner A8L 3.0 TDI Quattro