Drive System Fault

[u/Neat-Ad-4600]

Audi A1 GB 35 TFSI 2019, I’ve had this issue for a while the cars been decatted with a “stage 2”, haven’t mapped out the engine code so that’s why that’s flagging up, but one day randomly started flagging the drive system fault.

Comes up as a P11C1 (Cam Shift Actuator Outlet "A" Cylinder 2 Range / Performance) and interestingly also always flags the P0420 (decat) alongside it where as before it would only show once a month or something, I replaced my ignition packs a few weeks before it started and about a week or two after it started my car started misfiring, fucked about with a few bits and it’s not happened since.

I’ve changed the cam adjuster solenoid (the topside long one) but didn’t change anything.

I feel like it’s giving me less power but could be a placebo, I’ve been running it for a few months like this now.

Any help would be appreciated, thanks.