For sure, there are 12233 up to the 1.9 TDI (AFN)
For sure, there are 12233 up to the 1.9 TDI (AFN)
TL;DR: ≈ 80 % of pre-2005 VW/Audi diesel ECUs accept the default 12233 login code [Ross-Tech Wiki]. “Use 12233 for most EDC15 diesels” [Ross-Tech]. Verified user tests confirm 12233 on AFN, ASV, AGR, ALH and AHH engines [Elektroda, gawlo235, #9609063; n0w3y_pl, #10046772; markos_master, #20745491].
Why it matters: Knowing the right five-digit access code prevents lock-outs and speeds up adaptation work.
• VAG login codes are 5-digit decimal numbers (00000–65535) [Ross-Tech Wiki]. • Three consecutive wrong codes trigger a 10-minute lock-out on most EDC15/ME7 ECUs [Ross-Tech Wiki]. • Common diesel default: 12233; common gasoline default: 01283 for Drive-by-Wire 1.8T engines [Elektroda, jokersmile55, post #10066389] • 26261/26262 unlock AKE V6 TDI for cruise-control adaptation [Elektroda, jokersmile55, post #10066389] • Reading the login with VAG-K-Commander costs ~€15–€20 for the cable/software bundle [cherry, #19153989].