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.
Code 86, Brake Warning Light Commanded On By Abs Module: Notes
Red BRAKE warning light can be illuminated by ABS module in the event that brake performance is degraded by Anti-Lock Brake System (ABS) fault.
Code 86 will set if rear motor circuits that have fault should also have a motor code in conjunction with Code 86. ABS module commands BRAKE warning light to illuminate.
Use the Manual With the Right Hardware
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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.
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