See also:

Uniform Tire Quality Grading
Quality grading information ALL PASSENGER VEHICLE TIRES MUST CONFORM TO FEDERAL SAFETY REQUIREMENTS IN ADDITION TO THESE GRADES Quality grades can be found, where applicable, on the tire sid ...

General information
Occupant Weight Sensor (OWS) indicator light ...

Three-way catalytic converter
• Keep your engine properly tuned. Certain engine malfunctions, particularly involving the electrical, fuel or distributor ignition systems, may cause unusually high threeway catalytic convert ...