Code Definition

C1165 — Cut Valve 2 fault

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

About C1165

C1165 is a manufacturer-specific chassis diagnostic trouble code recorded for Toyota vehicles. It belongs to the C-prefix family of codes, which covers chassis, braking, steering, suspension, or stability-control faults.

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.

C1165 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 Skid Control ECU stores this DTC when it detects an electrical malfunction in the Cut Valve 2 circuit, which is part of the ABS hydraulic control unit (the brake actuator assembly). The cut valves control brake fluid pressure to the wheel circuits during ABS, TRAC, and VSC operation. The ECU monitors the supply voltage and current through each valve circuit. When Cut Valve 2 appears open, shorted, or draws abnormal current outside the expected parameters, the fault is logged. The driver usually sees the ABS, brake, VSC, and TRAC warning lights come on, with stability control and anti lock ...

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