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Hi Dan, I'm not entirely sure if the gearboxes are completely identical. The code for mine is 0CK 301. Anyway, it was shifting roughly at low speeds, particularly between 1st and 2nd gear. Occasionally, I could also feel a slight jolt between 3rd and 4th gear. Just to add, I didn’t notice any noise from the DMF while idling, only when starting the car. Hope you manage to get it sorted. Nik

Hello, Unfortunately, I didn't. It took me many hours of browsing forums and engaging in further discussions with the garages before I decided to map out the unit. Since I've conducted some research, may I advise you to consider the following: Check and clean the Adblue connections. Follow the pipes from the Adblue tank to the engine and see if you can identify any frost-like abrasions. If yes, replace the pipes. Also, try going for an extended ride; sometimes the nozzle can become blocked, and if you drive for a longer duration, it may clear the blockage. Lastly, if none of the above helps (this was my case), you should typically replace the Adblue pump as the sensor is integrated with the pump and cannot be replaced separately (expensive). I hope you'll find a straightforward solution. Oh, forgot to mention that you need to top up the Adblue. If your level is low, this can sometimes trigger the same error. Good luck.

Hello Audi Owners, So, I thought I'd put up this post for those who, like me, are having a bit of a nightmare with their Audi A6 C7 gearbox shifting. I've been scouring the web, but couldn't find any decent fixes. Lots of people posted about it, but most just ended up taking their cars to the dealer, and there were no updates after that. I got this car about 6 months ago, and at first, I didn't notice the issue. The issue was that the gear shifting felt pretty bumpy when moving from 1st to 2nd gear, especially when stuck in slow-moving traffic. However, if you put your foot down and accelerate a bit more aggressively, it shifted smoothly. That's the easiest way to put it. So, I decided to get to the bottom of it. I started with a gearbox service, changing the oils in both the gearbox and mechatronic, along with the mechatronic filter. No luck, didn't make a difference. Then I turned my attention to the suspension, swapping out the arms. Nope, that didn't help either. I heard a weird noise coming from the CV joint on one side and decided to change the entire driveshaft. Still, no improvement. I was getting ready to tackle the clutch when I dropped by the local garage, and they suggested taking a look at the dual mass flywheel (DMF) because they heard some noise when starting the car. Finally, after swapping out the DMF, the car shifts like a dream now. I'm not saying this is the silver bullet for all shifting problems, but I hope it helps someone out there identify or relate to their issue. To describe my issue better, the scanner didn't show any errors, the car used to jerk from 1st to 2nd with a loud banging noise from underneath. Also, when downshifting from 3rd to 2nd and from 2nd to 1st, it would make the same noise and jolt. When driving faster, I noticed a slight power drop when shifting into 4th and 6th gear, meaning the car didn't accelerate smoothly through the gears during acceleration. Good luck fixing it if you are having the same problem.

Thank you Steve, I'll check it out this weekend.

I'm seeking some expert advice regarding a recurring fault code that has been popping up on my 2016 Audi A6 Avant 2.0tdi. The code in question is 9658 - Reductant Pressure Sensor Circuit, P204B Implausible Signal. The check engine light has appeared twice in the past two weeks but disappears after a couple of heat cycles. Has anyone else experienced this intermittent behavior with the same fault code? I'm curious to know if there are any insights or potential explanations for this pattern. In addition, last week I encountered an AdBlue system fault (No restart in 600 miles). It disappeared after restarting the vehicle. It's worth mentioning that when I scanned the car using VCDS, no other faults were displayed (except the above-mentioned). Could there be any connection between the AdBlue system fault and the Reductant Pressure Sensor Circuit fault code? I'm eager to hear from those who have successfully resolved these issues or have encountered similar situations. Your knowledge and suggestions for troubleshooting steps would be greatly appreciated. So far searches in google suggest replacing the AdBlue pump, but the symptoms and the fault code are not quite the same. Thankfully, I have not experienced any noticeable performance issues with my Audi A6 so far, but I'm concerned about any potential long-term risks associated with these fault codes. Thank you all in advance for your invaluable insights and expertise!