Audi A3 CRC error

[matekhr]

Hi,
I need a correct dump with 180300km. My dump has CRC error and display shows 999999.
Original dump is also attached.
Dashboard is 8L0 920 900K with HC912DG128 inside.
Thanks in advance.

[smokey08]

Try this, I have already calculated for you.

0x099-0x128, String1 = FFFD3FB3
0x129-0x1b8,String2 = FFF2C04C

0x445-0x446, CRC = 86DE

ALGO:
km > hex = string 2
string2 xor ffffffff = string1
km /100 > hex xor 81D5 = crc

[tachonow]

This is good dump with crc ok.