Tire Pressure Monitoring System (TPMS) Warning Light Always On
The TPMS warning light is constantly illuminated, indicating 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 threshold, typically 25% below recommended pressure).
TPMS sensor battery failure or sensor damage (common after tire service or impact).
Faulty TPMS module or wiring issue, or system not reset after tire pressure adjustment.
Related OBD-II Codes
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What You Should Do
Check and adjust all tire pressures to the recommended level (found on driver's door jamb sticker).
If light remains on, drive for a few minutes to allow system to update.
If still on, have the TPMS sensors and system diagnosed by a professional.
Related Repairs
Estimated Repair Cost
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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.