ABS Warning Light Always On - Ford Explorer 2020
The ABS warning light is constantly illuminated, indicating a fault in the anti-lock braking system. This means the ABS is disabled, but normal braking should still function. However, in emergency or slippery conditions, the system will not assist, increasing stopping distances and risk of wheel lock-up.
Diagnosis Details
Possible Causes
Faulty wheel speed sensor (most common on one wheel due to debris, damage, or corrosion)
Damaged or corroded ABS tone ring (reluctor ring) on the wheel hub
ABS module failure or internal electrical fault
Related OBD-II Codes
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What You Should Do
Have the ABS system scanned with a professional diagnostic tool to retrieve trouble codes.
Inspect all four wheel speed sensors and their wiring for damage or debris.
Check the ABS tone rings for cracks or missing teeth.
If no obvious issues, the ABS module may need testing or replacement.
Related Repairs
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Disclaimer: This AI-generated diagnosis is for informational reference only. Always consult a qualified mechanic for an in-person inspection. AutOwner is not responsible for decisions made based on this information.