FixVault
Home
›
Hummer
›
2005
›
H2 4D Utility Pickup
›
Repair and Diagnosis
›
Brakes
›
Traction Control
›
Antilock Brake System And TCS
›
Diagnostic Information And Procedures
›
DTC C0121
›
DTC Descriptor
DTC Descriptor
This diagnostic procedure supports the following DTCs:
DTC C0121 Valve Relay Circuit Malfunction