that is a malfunction in the abs system or awd system the most likely cause is a speed sensor  read the speed sensors data in your scan tool  if they all read ok then it is probably a bad awd control unit   but don't jump to conclusions  check all connections   there is a procedure to follow on both all data and on demand5 for this code C1203 also erase codes if you get c1201 replace awd control unit  follow procedure to the teeth  and avoid replacing the wrong component good luck