Audi Repair: audi a6 abs and check engine lights, audi a6, m cars

Question
I have a 99 Audi a6 2.8 quattro and my check engine light came on so i changed the 2 sensors in the front and it's still on. also the abs light stays on while the brake light blinks. tell me more about this and whats a reasonable price for a non dealer professional to fix those problems. i plan on taking it to this place called L & M Foreign Cars in nyc, i dont know if u heard of it.?

Answer
hello
check engine light may come on for 100 things. what sensor did you replaace ?? what was the fault?? what fault do you have now?? I will need this for any diag.
ABS on and brake light blinking - most of the time means no communication with the module . you may need new ABS module.
But, I also need fault to tell you more. Do not know the prices but ABS module for A4 is about $500  and I do not know L&M cars ( hope they know what to do ):)
Good luck