Chassis OBD2 Codes (C-Codes)
Chassis OBD2 trouble codes identify faults in vehicle systems such as ABS, braking, traction control, steering, suspension and other chassis-related electronic control systems.
What Are Chassis OBD2 Codes?
Chassis diagnostic trouble codes begin with the letter C. They are associated with systems such as braking, vehicle stability, steering, suspension and other chassis-related electronic controls.
A C-code identifies the fault detected by a control module but does not necessarily identify the failed component. Diagnosis may require sensor testing, wiring checks, live data and vehicle-specific service information.
How to Read a Chassis C-Code
A Chassis diagnostic trouble code begins with the letter C followed by four characters. These characters identify the diagnostic range and the individual fault stored by the vehicle.
Common Chassis Systems
- Anti-lock braking systems (ABS)
- Electronic stability control
- Traction control systems
- Wheel speed sensors
- Electronic power steering
- Suspension and ride-control systems
- Brake pressure and position sensors
Browse Chassis Codes by Family
Standardized diagnostic trouble codes associated with chassis-related vehicle systems.
Definitions in this range may depend on the vehicle manufacturer, model and control system.
Additional chassis diagnostic definitions covering vehicle-specific and system-specific faults.
Further chassis-related trouble codes whose meaning may depend on the manufacturer and vehicle platform.
Common Chassis OBD2 Codes
These Chassis trouble codes cover several frequently diagnosed braking, ABS, wheel-speed, steering and stability-control systems. Select a code to view its definition and available diagnostic information.
Browse Chassis Trouble Codes
Showing Chassis OBD2 codes from our database of 1 published C-codes.
Generic vs Manufacturer-Specific Chassis Codes
Some Chassis DTCs use standardized definitions, while others are defined by the vehicle manufacturer. For manufacturer-specific C-codes, the exact vehicle make, model, year and control module should be taken into account during diagnosis.
How to Diagnose a Chassis DTC
Start by reading all stored and pending diagnostic trouble codes and identify whether several faults relate to the same ABS, steering, suspension or stability-control system.
Inspect relevant wiring, connectors, fuses and sensor signals. Live data from wheel-speed, steering-angle and related sensors can also help identify the source of the fault.
Chassis OBD2 Codes FAQ
What does C mean in an OBD2 code?
The letter C identifies a diagnostic trouble code associated with chassis-related vehicle systems.
Can a Chassis code cause an ABS warning light?
Yes. Chassis DTCs can be stored when faults are detected in ABS, stability-control, wheel-speed sensing or related systems.
Can every OBD2 scanner read Chassis codes?
No. Access to ABS, steering and other chassis control modules depends on both the vehicle and the diagnostic capabilities of the scan tool.
