Camshaft positioning sensor relearn.
Thread Starter
AudiWorld Junior Member
Joined: Feb 2025
Posts: 7
Likes: 1
Camshaft positioning sensor relearn.
I have a 2015 q7 which i have replaced the valves then the timing chain using the audi kit to lock the cams and crank into proper position. Now I have a check engine light on.
my computer says it's the two camshaft positioning sensor. I checked the camshaft with a diagnostic computer and it said one camshaft was -1.38 degrees off, the other as -2.6 degrees off. It also has onother code for a flap...but i think its because of the sensors.
I've replacement both camshafcamshaft, oil is new, VVT actuator are working per computer.... i was going to clean them next, but I wanted to see if someone had a thought of how to fix this.
BTW i tried to run a relearn on the computer but it said the computer couldn't do that yet....i have a launch 2.0 2025 from Amazon. Was thinking of returning it due to not doing half the things it said it could do. No better than my older computer.
thanks for any ideas.
my computer says it's the two camshaft positioning sensor. I checked the camshaft with a diagnostic computer and it said one camshaft was -1.38 degrees off, the other as -2.6 degrees off. It also has onother code for a flap...but i think its because of the sensors.
I've replacement both camshafcamshaft, oil is new, VVT actuator are working per computer.... i was going to clean them next, but I wanted to see if someone had a thought of how to fix this.
BTW i tried to run a relearn on the computer but it said the computer couldn't do that yet....i have a launch 2.0 2025 from Amazon. Was thinking of returning it due to not doing half the things it said it could do. No better than my older computer.
thanks for any ideas.
AudiWorld Super User
Joined: Jan 2021
Posts: 4,568
Likes: 1,456
From: USA - NM
Take the exact fault codes and go to the Ross-Tech Wiki site; look them up there.
Buy a Ross-Tech VCDS (VAGCOM), as that is what actual mechanic repair shops use to work on Audi's & VW's, etc. It gives you full access. I own three VAGCOM capable scan tools now, as that's how long it took me to figure out I needed one with full access to DIY this car and save money doing it.
So far as camshaft sensors themselves go, they aren't that expensive and sometimes go bad over time, or when there is an internal mechanical failure that creates contact with the sensors.
There's not enough info in your post to determine anything from except that you DIY'd a complex repair job that must be performed exactly to spec.
Good luck!!!
Buy a Ross-Tech VCDS (VAGCOM), as that is what actual mechanic repair shops use to work on Audi's & VW's, etc. It gives you full access. I own three VAGCOM capable scan tools now, as that's how long it took me to figure out I needed one with full access to DIY this car and save money doing it.
So far as camshaft sensors themselves go, they aren't that expensive and sometimes go bad over time, or when there is an internal mechanical failure that creates contact with the sensors.
There's not enough info in your post to determine anything from except that you DIY'd a complex repair job that must be performed exactly to spec.
Good luck!!!
Thread Starter
AudiWorld Junior Member
Joined: Feb 2025
Posts: 7
Likes: 1
Thank you for the help with the scan tool. I’ll get that next, but I had a different question. Since I changed the timing chain, Cam sensors and cleaned the VVT, I still have the timing off by the same amount (-1.5 degrees and -3.63 degrees code 00016 and p0018) my question is will doing a camshaft positioning sensor relearn allow the VVT to adjust the timing to the proper amount or do I have to go in and adjust the intake cams to align to 0.0? If the answer is the mechanical timing must be corrected to 0.0 or something close, I think my skills and tools are not up to the challenge. On the other hand if a relearn will fix this, then I'll get the computer, and this will fix the last of my issues.
BWT the other codes were p2006 and p2007. I didn't install the flaps properly so the system wouldn't open when accelerating. I’ll fix that tonight when I remove the supercharger…. I’m still learning
BWT the other codes were p2006 and p2007. I didn't install the flaps properly so the system wouldn't open when accelerating. I’ll fix that tonight when I remove the supercharger…. I’m still learning
Last edited by Caschwartz4; Jul 9, 2025 at 10:33 AM.
AudiWorld Super User
Joined: Jan 2021
Posts: 4,568
Likes: 1,456
From: USA - NM
I don't know. I haven't researched changing the timing chains procedure, but you should have a repair manual for the car if you did something that in-depth, as there's a lot you can get wrong by not following the book procedure on a repair job like that. Normally the old sprockets get removed and replaced so everything is new and shiny, so there's definitely an adjustment procedure to set them correctly. I just don't have that info at my fingertips, nor do I have that engine.
Start with the repair manual's procedural steps for the R&R of the timing chain & sprockets, and see if you missed something.
Start with the repair manual's procedural steps for the R&R of the timing chain & sprockets, and see if you missed something.
Thread
Thread Starter
Forum
Replies
Last Post
cardiffGIANT_67
A8 / S8 (D2 Platform) Discussion
7
Jan 17, 2022 08:14 AM
Monkeyboy
A4 (B5 Platform) Discussion
11
Oct 20, 2008 02:39 PM
