ABS Warning Light Always On – 2020 Jeep Wrangler
The ABS warning light is constantly illuminated on the dashboard, indicating a fault in the anti-lock braking system. This means the ABS is disabled, but normal braking should still function. However, the vehicle may lose stability control and traction control features.
Diagnosis Details
Possible Causes
Faulty wheel speed sensor – most common cause; sensor may be damaged, dirty, or have a wiring issue.
ABS module malfunction – internal failure or communication error.
Blown ABS fuse or relay – electrical supply issue to the ABS system.
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 wheel speed sensors and wiring for damage or debris.
Check ABS fuse and relay.
If codes point to a sensor, replace it.
If module-related, may require reprogramming or replacement.
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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.
