Code Definition

C1206 — ABS Inlet Valve Coil Rear Circuit Failure

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

About C1206

C1206 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 C1206 is stored, the module has detected an electrical-circuit fault in the wiring, connector, or driver associated with the named component.

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.

C1206 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 ABS hydraulic control unit (HCU) contains inlet and outlet solenoid valves for each controlled wheel circuit. The rear inlet (isolation) valve closes to hold or isolate brake pressure in the rear circuit during an ABS event, preventing further pressure increase while the module modulates the wheel. DTC C1206 is set when the ABS module detects an electrical failure in the rear inlet valve coil circuit, which can be an open winding, a short to ground, a short to power, or an out of range current reading on the driver stage. When this code is active the ABS, traction control, and stability fu...

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