Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Test B: DTC 1-1-1-2: Description
ABS control unit has detected either an open or shorted Gray/Green wire from ABS control unit harness terminal No. 20 to Hydraulic Control Unit (HCU) terminal No. 17. An open or shorted front left isolation solenoid valve coil or output driver in ABS control unit will also set this code.
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.