- OBD II is the second-generation on-board diagnostics.
- All 1996 and newer cars and light duty trucks have an advanced powertrain control computer that uses OBDII technology to manage and monitor the operation of the engine, transmission, and emissions control components.
- OBDII monitors your engine to ensure it is running at peak efficiency and will alert you when repairs are needed.
- If the “check engine” or “service engine soon” light comes on and stays on, the OBD system has detected a problem.
- The vehicle might have a condition that wastes fuel, shortens engine life, or causes excessive air pollution.
- Get to a service station at the next opportunity.
- If left unadvised, problems could also damage vehicle and lead to increasingly expensive repairs.
- Make sure your gas cap is not missing and is screwed on tightly as this can sometimes cause the MIL (malfunction indicator light) to go off.
- If light does not go out after a few short trips following gas cap replacement or tightening, have vehicle serviced by qualified repair technician soon.
- If the light is blinking, a severe engine problem such as a catalyst-damaging misfire is occurring and should be addressed as soon as possible.
- At a qualified technician shop, the technician will connect a small, hand held scanning device to your car’s computer and download information that can pinpoint the problem.
- A technician will repair the problem based on manufacturer recommendations.
- OBD helps repair technicians do their job more quickly and reliably, helping the car owner to avoid unnecessary repairs and trips back to the shop.