Weird problem
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AudiWorld Junior Member
Joined: Mar 2021
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Weird problem
Hi to all i have a weird problem on my A4b7 2L tdi 2006 audi so first of all my check engine is on don't really know what it the problem yet but i replaced the 2 xenon globes but i removed the air filter but after a few months the check engine light cane on so here is the actual symptoms if i start my car now it drives fine all power no limping nothing it gets hot(on temperature not above it) runs fine get to my destination and when i came back cruise control on both ways now im driving back and the cruise control goes away i step on th gas revs goes up but speedo does nothing at all revs keeps rising no increase in speed but only for a little while then my cruise control comes back and power is fine step on the gas and it goes like normal it weird so can't be slipping gearbox cause then it will keep slipping and as i said it does come back full power no slipping don't really have a obd2 scanner i bought a konnwei 450 they said is specific for the audi cars so i hope it will help but does any of you have any idea OBD SCANNER SAYS
P2108
Last edited by marius waterson; Jan 1, 2026 at 01:04 AM.
AudiWorld Junior Member
Joined: Nov 2025
Posts: 20
Likes: 2
Check you TPS (throttle position sensor it could be bad or going bad.
Or you could have carbon buildup
Make sure the throttle body motor is working correctly.
Might be worth taking it off and cleaning it out,
There are lots of youtube videos on how to do this.
Good luck!
Or you could have carbon buildup
Make sure the throttle body motor is working correctly.
Might be worth taking it off and cleaning it out,
There are lots of youtube videos on how to do this.
Good luck!
AudiWorld Junior Member
Joined: Oct 2025
Posts: 11
Likes: 0
P2108 is a diagnostic trouble code that indicates a problem with the Throttle Actuator Control Module, which can affect engine performance. Common symptoms include reduced engine power and warning lights on the dashboard.
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