ABS Warning Light On – Subaru Outback 2020
The ABS warning light is constantly illuminated, indicating a fault in the anti-lock braking system. This does not necessarily mean the brakes will fail, but ABS functionality is disabled, which could affect braking performance in slippery conditions.
Diagnosis Details
Possible Causes
Faulty wheel speed sensor (most common cause)
Damaged or corroded ABS tone ring
ABS module or pump failure
Related OBD-II Codes
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What You Should Do
Have the vehicle scanned with an OBD-II scanner that reads ABS codes.
Inspect wheel speed sensors and tone rings for damage or debris.
Check ABS fuse and wiring.
If no obvious issue, consult a professional mechanic for further diagnosis.
Estimated Repair Cost
$100–$600 depending on the cause (sensor replacement ~$150–$300, module repair ~$400–$800)
Typical range: $100 – $600
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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.