Audi A3 EPC + MIL Light on
 

Here goes,
Engine wash, one day driving and then car starts to shudder and MIL came on but goes of again after a pit stop to eat car drives OK and then after a day car starts to shudder again => Discovered water around the spark plugs => dried it up but car keeps shudering so take off battery pole to reset =>again car dries good for a day and a half then EPC and MIL came on. So I scanned :
P0332 Knock sensor 2 circuit bank 1-G66: low
P1355 Cylinder 1,ignition circuit open
P0301 Cylinder 1 isfire detected
P0100 Air massmeter -G70 supply voltage
P1602 Power supply (B+) terminal 30: Low voltage
P0601 Internal control module memory: checksum error
What's is really at fault here ??:confused::confused:

Hello anybody I need some help here ??????

pull plug 1 and check for water damage it may have been a lose plug that let some water in and it keeps reading it. If its tight take it to the dealer or your local VW/Audi Mechanic