Check engine lights are on every time when there is a problem in the engine or the emissions control system. You should always have the codes generated by your car’s computer scanned and read so you can determine the cause. You can try to reset the light before you try to fix the problem. This article will tell you how to reset the check engine light in your truck.
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Use a Code ScannerConnect the scanner to the on-board diagnostic connector (OBD-II) under your steering wheel.Turn your ignition switch to “On.” Turn off all accessories.Press the “Read” button on your scan tool to view the engine’s error codes. Remember the code or codes in the order they were received for future repairs if necessary.Press the “Erase” button on your scanner to clear the error code. Clearing any codes will turn off your check engine light. Some scanners have other capabilities like freeze frame that detect some sensor readings when a code was set and erasing the codes will also erase this file and help in the situation.
Erasing the Code (Old way)Disconnect your truck’s battery by removing the positive and negative cables. Use a wrench to remove the cables if necessary.Press and hold your city horn for 30 seconds to drain any remaining electricity from the capacitor.Wait 15 minutes and reconnect your battery. The codes should be erased which will cause your engine light to turn off. This process may not work on all truck’s computers. If the battery is disconnected and the light comes right back on, this may indicate an active problem and should be detected and fixed.
Erasing the Code (With ignition Key)
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If you tried every step, and you cannot erase the codes, that means that the problem is seriously than we expected. In that case, the best option will be to park the truck and call road service assistance.