Do All Vehicles Have an OBD System?

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Today’s cars are equipped with sophisticated technology. The OBD system (on-board diagnostics) is actually advanced enough to monitor several critical systems on your vehicle and warn you when something starts to go wrong, which can prevent serious damage in the long run.

Not all cars have an OBD system

OBD has been around for a long time, but not all vehicles have this system. OBD I, the first version, was introduced as early as the 1960s, but it wasn’t mandatory on all cars. Some automakers included it from the beginning, but others didn’t adopt it until later on.

OBD II came along later, but it was not made mandatory until 1996. From that point onward, all vehicles sold in the US were required to have an OBD II system. This meant that all vehicles had the same type of connector located somewhere under the dash, and that most of the trouble codes were standardized. Note that not all trouble codes are standard or open for access. Some are automaker-specific and cannot be read without an advanced scan tool (a consumer-grade code reader will not do this).

OBD II also surpassed OBD I in other ways. For instance, OBD I systems would only turn on the Check Engine Light after a failure. OBD II systems are able to monitor gradual deterioration of a system and turn on the Check Engine Light before a failure.

Unlike OBD I, which was a general monitoring system for vehicles, OBD II systems are highly focused on emissions and related systems. While the OBD II system also monitors engine and transmission performance, emissions control is the primary reason it was instituted.


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Mazyar

7 years of experience
181 reviews
Mazyar
7 years of experience
Ford Fusion - Brake Pads Replacement (Rear) - Duluth, Georgia
Got to the appointment early and was able to finish sooner than expected as well. Would definitely recommend!
Volvo XC90 - Brake Pads Replacement (Front, Rear) - Marietta, Georgia
Mark did a great job on my brake rotors and pads replacement. He is very knowledgable and thorough with the process and inspection. He finished the job on time and did a test drive with me. I will definitely book with him again in the future.

Bradford

12 years of experience
8 reviews
Bradford
12 years of experience
Jaguar XF - Brake Pads Replacement (Rear) - Upper Marlboro, Maryland
Brad was great. Completed the job and made sure I was aware of other issues as well as completing the job he actually came for.
Dodge Grand Caravan - Brake Pads Replacement (Front) - Clinton, Maryland
This was my first experience. Brad, was timely; efficient; he answered my questions; he went over items that need to be addressed in order to get my car in shape. It was very convenient, I was able to fix my kids dinner, and not disrupt their schedule. I will be using this service again. The entire experience was positive. Very happy...

Scott

33 years of experience
357 reviews
Scott
33 years of experience
Toyota Camry - Brake Pads Replacement (Front, Rear) - Denver, Colorado
Scott is very professional & always so kind! He gets the job done and makes sure to discuss what may need to be done in the future. Would recommend him to anyone!

Stacy

23 years of experience
120 reviews
Stacy
23 years of experience
Nissan Pathfinder - Brake Pads Replacement (Front) - Atlanta, Georgia
Amazing! Professional, professional, professional! Brakes were done in no time....while I was in the building working!

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