Unlock Your OBDII Potential Troubleshooting Failures in CAN Safety Tests

After a google search I've found that it could be an ECU issue, fuse, or DLC connector issue. I can check fuses but otherwise I'm not sure what ... Vehicles will fail the OBDII test if too many monitors are unset at the time of testing. For 1996-2000 vehicles, three or more unset monitors ... Problems with spark plugs or ignition coils can lead to misfires and poor engine performance. Timing issues affecting ignition timing may also ... If the code reader isn't reading it could be a blown fuse. I have heard that the cigarette lighter fuse also controls the CEL. Check that and all the other ... Unset Monitors. Often, a failed inspection is due to system monitors not being ready. There are two types of monitors in a vehicle: Three ... Explanation of OBD-II diagnostic trouble codes (DTCs). Before DTCs became commonplace, diagnosing issues could be time-consuming. With OBD-II, vehicles can ... An OBD II vehicle will not pass the annual inspection unless the required system tests have been completed and reported as "ready." For more ... It may have a button for that, or you may have to go through the menus to find the one that clears the codes. Continue Reading. 2. Incorrect Usage ... User error is another significant factor that can lead to ECU damage. Incorrectly connecting or disconnecting the scanner, ... It could be the ECM ground, or a ground from the ECM (as most have multiple grounds). Bad/no grounds have very weird results. If you turn the ...