See also:

Emissions Testing
Testing of Readiness Codes Your vehicle uses “readiness codes,” as part of its onboard self diagnostic system. Some states refer to these codes during testing to see if your vehicle's emis ...

If the Charging System Indicator Comes On
Reasons for the indicator to come on Comes on when the battery is not being charged. What to do when the indicator comes on Turn off the climate control system, rear defogger, and other electrica ...

Tire Pressure Monitoring System (TPMS) -Required Federal Explanation
Each tire, including the spare (if provided), should be checked monthly when cold and inflated to the inflation pressure recommended by the vehicle manufacturer on the vehicle placard or tire inflat ...