Oklahoma Car Inspection FAQ

Oklahoma vehicle inspection FAQ

State Vehicle Emissions Testing & Inspection

With regular car inspections and routine emissions checks, vehicle drivers can be made aware of any issues with their vehicles. In case your vehicle fails the inspection or the vehicle-emissions test, you will know it is ready for some immediate attention and potentially some repair. Vehicle owners need to make plans for the repair as soon as possible because it may jeopardize the reliability of the vehicle and even lead to significant penalties and even an invalidated registration. For that reason, it is highly recommended to have your vehicle checked by a qualified service technician a minimum of every six months to avoid all these inconveniences. Some frequently asked inquiries on automobile inspection are described below.


What is On-Board Diagnostics?

The OBD or On-Board Diagnostics, or OBD II is a standardized computer system implemented in all cars built in and after 1996. Simply put, all the cars made in 1996 and after will have an OBD system in them, which offers data reports on self-diagnosis of the car frequently used by automobile service technicians prior to doing any kind of automobile repairs.


What Are The Most Common Causes Of a Failed Emissions Test?

An emissions test can fail for numerous factors as a result of malfunctioning automobile components such as an injector, oxygen sensor, ignition system or even an EVAP system. One of the most typical causes is faulty injectors. Either the injectors or a malfunctioning oxygen sensor can activate a “rich air-fuel mix” causing a poor vehicle emissions test.

If your automobile has a damaged ignition system, there is a higher possibility that it might be the root cause of a rise in exhaust emissions. This, in turn, can cause a failed vehicle-emissions test.

Any kind of issue or deficiencies in the EVAP system or evaporative emission control system can cause trouble in the handling of the gas vapor produced from the automobile resulting in atmospheric pollution.

If your car hasn’t undergone routine maintenance and the “check engine” light is brightened on the control panel, your vehicle may not clear the emissions test.


What Do They Check for in a Vehicle Inspection?

A licensed inspector performs a car assessment at state-approved evaluation stations only. This is what they will check for:

  • Front lights: headlamps inspection to ensure appropriate operation, no broken lenses or lights, lights are the right color, are the same, and turn signals are operable.
  • Tail lights: Turn signals, marker lights, hazard lights, license plate lights, brake lights, reverse lights are operable, and no damaged taillights
  • Wheels and Tires: to inspect tire problems for any indicators of damage and if there is a need for replacement
  • Mirrors: Check to make sure no mirrors are cracked, broken or missing
  • Safety belt: to evaluate safety belt condition and ensure they are securely working or require a replacement
  • Brakes: a comprehensive brake assessment to ensure proper brake action and if there are any type of brake fluid leaks
  • Horn: ensure the horn is working correctly
  • Assessment of suspension and shock absorbers

How Long Does A Safety Inspection Take?

Depending upon the state, city, and county where the vehicle tests are conducted, the car safety inspection duration may vary. However, for a majority of cars, this process generally takes one hour to an hour and a half.


Oklahoma Vehicle Inspection FAQ | Nissan Dealership Oklahoma City