Code Definition

C1405 — Traction Control Valve Rear Circuit Open

System: Chassis  |  Type: Manufacturer-Specific  |  Make: Generic

About C1405

C1405 is a manufacturer-specific chassis diagnostic trouble code. It belongs to the C-prefix family of codes, which covers chassis, braking, steering, suspension, or stability-control faults.

When C1405 is stored, the module has detected an open (broken or disconnected) electrical path in the monitored circuit.

Scanning & clearing: Chassis (C) codes are stored in the ABS, traction control, or stability-control modules. An enhanced or OEM-level scan tool is usually required to read and clear them.

C1405 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

The C1405 fault code indicates the ABS or traction control module has detected an open circuit on the rear traction control valve. The rear traction control valve is a solenoid valve inside the ABS hydraulic control unit that the module energizes to apply brake pressure to the rear axle during traction control and stability control interventions. This code is specifically set when the rear valve coil fails to conduct current when commanded, indicating either an open winding inside the valve coil or an open circuit in the module valve driver. Most modern ABS systems integrate the valve with the...

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