Tire Pressure Monitoring System (TPMS) Warning Light Always On
The TPMS warning light is constantly illuminated on a 2020 Ford F-150, indicating that one or more tires have low pressure or the system has a fault. This can affect tire wear, fuel economy, and safety.
Diagnosis Details
Possible Causes
One or more tires are significantly under-inflated (below the recommended pressure).
A TPMS sensor battery has failed or the sensor is damaged.
The TPMS system needs to be reset after tire rotation or pressure adjustment.
Related OBD-II Codes
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What You Should Do
Check and adjust tire pressures to the recommended PSI (found on driver's door jamb).
If the light remains on after correcting pressures, the system may need a reset or a sensor replacement.
Visit a tire shop or dealer for diagnostic scan.
Estimated Repair Cost
$0 (if just adding air) to $50-$100 per sensor for replacement plus labor
Typical range: $50 – $100
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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.