Home >> Cadillac >> 2004 >> Escalade EXT >> Repair and Diagnosis >> Brakes >> Antilock Brake System, Traction Control System & Stability Control System >> Diagnostic Information and Procedures >> DTC C0221, C0222, C0223, C0224, C0225, C0226, C0227 (W/O JL4): Wheel Speed Sensor Circuit >> Conditions for Running the DTC >> C0221 and C0225