subject: Tips To Use Obd2 Scanner Check The Codes [print this page] As we know since 1996, all cars must equip with a system called OBD 2, which has the ability to store in-memory fluctuations of preset parameters for the operation of all the items within its area of influence. These faults that are stored in computer memory can be accessed through the use of an error code reader or scanner. This tool can be bought at most car parts shops, and also is cheap. The OBD 2 code reader comes with a code interpretation list useful in deciphering the trouble codes. The computer communicates through the use of two-letter codes.
Things You'll Need
Code OBD2 scanner
Process1
Put the OBD2 outlet under the dash, generally on the driver's side below the steering column.
Process 2
Plug the cable end of the code reader into the OBD 2 terminal outlet. Turn the ignition key to the on position with the engine off. Press the "Read" button on the code scanner. After a moment or two, the scanner will display a 4-digit code in the form of a number, for instance, 1460. If there is more than one error code, press the button for the next. Write all the error codes down on a piece of paper.
Process 3
Use the error code interpretation sheet supplied with the scanner to cross-reference the numbered codes to the explanation for these trouble codes.
Process 4
Check any of the code-related items before condemning and replacing them. The computer sees a discrepancy in the operation or signal of the item that caused the service engine soon light to come on. Always check the wiring connector and the condition of the component first. In most conditions, if there is no signal from a component, it is likely in need of replacement. There is one circumstance that requires much more diagnostics. If the code for an oxygen sensor comes on, it means that the computer saw a discrepancy in the fuel mixture. This does not necessarily mean that the sensor is bad. Anything from a bad plug wire, spark plug, mixture, vacuum leak and many other things can produce the same effect. Unless the code says, for instance "B1 S1 heater inoperative"--which is a true fault--the sensor is probably good.
Process 5
After the repair is finished, turn the key on again and power off the engine. Click the "Erase" button or similar button and the code reader will clear the error OBD codes, the engine check light will shut off when you power on your car.
