groovetek

Hey guys, I've got an issue, mainly with my tiptronic at the moment; hoping someone with experience can help me out.

A few days ago; after an odd clunky gear change; it's been abit weird.

Every gear change is fine except 2nd to 3rd. If i'm going very gently it will shift quickly as usualy and lockup will be normal. However, if I'm accelerating moderately hard in 2nd, and change into 3rd; the revs won't drop down properly... at least, it will be taking it's time; like the TC isn't locking on fully...

Then after a few seconds, it will suddenly lock in; and the car will lurch forward and then continue as usual.

Now, if I'm accelerating very hard... all the way at full throttle past 6krpm in 2nd; the car will suddenly go back to PRND432 display and the revs will elevate and the car will accelerate really aggressively until it reaches redline and then it shifts itself to the next gear; now, if I let go of throttle BEFORE it changes gear; and the revs drop back down, it will suddenly go back into tip mode and display 2 as it should.

However, if it had then gone into the next gear, I have to manually move the shifter back to D, then N, then back to D and back to tiptronic before 54321 is displayed again. Obviously by this time the D had shifted the car into 5th...

Anyway, in terms of error codes, it has developed the following over time (there were none since I had the car; but only last few months, started having some):

18265 - Load Signal: Error Message from ECU

18010/1602-POWER SUPPLY #30 VOLTAGE TOO LOW

and the last one if I recall correctly was 16795, which is 16795 - Secondary Air Injection System: Incorrect Flow Detected

not sure on the last one; i'll wait for the error code to reappear again and report back... the 18010 may be from me disconnecting battery.

Anyway the 18265 is my primary concern! Whether or not it is related to the tiptronic issue; I'm not too sure!