C1091 C1151 C1161 C1171 C1181 C1148 C1158 C1168 C1178 C1236 C1235 C1233 C1234 All of the above relate to; 0pen or short circuit, front sensor, rear sensor, harness, damaged teeth on brake anti-lock sensor, sensor air gap too small/large, damaged anti-lock brak... Login to read more.