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 87, Brake Warning Light Circuit Open: Notes
Red BRAKE warning light can be turned on by ABS Control Module (ACM) in the event that brake performance is degraded by ABS fault. Because ABS is not the only device controlling BRAKE light, ACM cannot detect a short to ground on this circuit. An open in the circuit will not adversely affect ABS, but ACM will flash ANTI-LOCK warning light.
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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