The most common cause of not being able to read OBD-II codes is a blown fuse. To locate your car’s fuse box. The location is in your owner’s manual. This one’s underneath the hood. Lift the cover and find your ECM fuse you can check it with a test light. Hook the test light up and it’ll light. Go to the ECM fuse, there’s two little metal tabs check both sides. If the fuse is blown, one side will light the other side will not.
Use The Scanner tool to Find the OBD-II Codes
Now that we’ve fixed our we can hook up the scanner we can retrieve the codes. Most OBD-II connectors are right under the dash. Now that your scanner is connected scroll down to OBD codes, read codes and your scanner will hook up to your car’s computer and the code will come out. This code is a 442 for an evaporated emission control system leak. That’s a very common because all the lines underneath your car are made of plastic and rubber and they’ll crack from time to time, As we found with this car, the most common cause is a blown fuse.