You can read the error codes, turn off the light and make dignósticos injection of defects of your car just by using your mobile phone and a OBD2 connector called ELM 327. Obd2 stands for on-Board Diagnostic System “or embedded diagnostic system and is the main way used today to discover defects in the vehicles.
Just make the car tracking and vehicle electronics will inform several possible problems with sensors and electronic components. In addition it is possible to infer other malfunctions from the existing vehicle sensors readings.
In this article we talk about the OBD Car Doctor app that allows you to communicate with the central car electronics using the OBD 2 connector and a Blueetooth as the ELM 327.
OBD Car Doctor can be downloaded to Android in the app store and is just 1 of many apps available to accomplish this task. He is very thorough and has a paid version and another, which was used in the video that illustrates this article.
The ELM 327 connector can be purchased for $ 5 from values in these Chinese sites like Deal Extreme and there Express. I preferred to buy one that cost 12 dollars because I saw that had good recommendations from other customers who bought previously. OBD2 connectors cheaper had no reviews in these sites or there were lots of complaints about the quality of the product. Choose one that suits your needs. In general compatibility with the models of cars have to be taken into account when setting the app to be used, because the OBD II connections are standardized in newer vehicles. I won’t go into details because I don’t have a complete list with all variations of interfaces, connections and protocols. In any case, as the goal is to just make it easier to obtain information about the vehicle, you may want to search if the connector to be purchased is compatible with your car.
ELM 327 connector purchased for the price of 12 dollars at Deal Extreme
OBD Car Doctor in its free version already has many interesting features as you can see in the video that illustrates this text. And read various sensors and information from your car and, in the paid version, show many of them at the same time on the screen, which is something I’d like to have done in the video in question, but only found out later.
How to Connect ELM 327 Bluetooth OBD Car Doctor
The hardest part to do all of this work was to sync Bluetooth with the ELM 327. Follow the steps below to make the ELM 327 work install the OBD Car Doctor on your mobile phone
connect ELM 327 OBD2 port on your car. (each car has this port in a different location)
turn the key to switch on the Panel (I can’t be sure if it’s required)
turn on the bluetooth on your mobile
do the pairing with the OBDII device that will appear in the device list. The PIN is 0000 or 1234
Open the OBD Car Doctor to authorize the use of Bluetooth
the program will connect to the ELM 327 and will begin to test each protocol
wait, this will take several minutes. (it took 12 minutes for me to work)
When you connect, you will see the options of sensors and information ready to be chosen (see the video)
After the connection has been made, you can start the car and go out driving around and seeing how the information of each sensor range. OBD Car Doctor shows including several interesting graphics with the information that your car has electronic central. For those who love technology and cars, is something fun.
Obviously the interpretation of video information for repair and maintenance of the vehicle shall be made by a skilled professional automotive maintenance: a reliable mechanic. In any case it’s nice to have access to the data reported by the car to make it easier to talk with the mechanic and help in the diagnosis stating the “Symptoms” of the problems. Do not make speeches or mechanical changes in your car without the proper knowledge because you can put your life and the life of others at risk. Go to a shop and take the information you get, do not use as a basis for maintenance if you are not sure of what you’re doing.
Remember to search if your model supports the Protocol and OBD2 connection before buying the ELM 327.
If you still have doubts about doing the OBD Car Doctor and the ELM 327 work on your car, leave a comment in this article, or preferably in the video!