ABS light & TRAC light on solid. BRAKE warning light flashes. code 01200. what causes this?

Question

seems to be shifting odd. ABS, TRAC and BRAke lights on. Any suggestions are greatly appreciated

Answer 1

01200 Supply voltage for ABS valves

This code condition is for your ABS system where power to the ABS unit or the ABS motor is affected. this can be from a open circuit to the ABS unit. This does not create odd shifting, What you need to check for is proper charging system which can affect both the ABS unit and the transmission. Battery voltage should be 12.5 volts, and a the charging system should be at 14 volts at idle.