Can a check engine light turn back on after clearing OBD2?
However, for cars manufactured from 1996 going forward, you will be expected to follow the above-discussed process. If the check engine light turns back on within a day after you cleared the OBD2 codes, you need to take this as a warning that your car requires to be inspected as this could mean a more serious underlying issue.
How to reset the OBD II drive cycle?
Decelerate without using the brake (coast down) to 20 MPH or less, then stop the vehicle. Allow the engine to idle for 10 seconds, turn the key off, and wait one minute. Restart and accelerate to 40-55 MPH at 25% throttle and maintain speed for two minutes.
How to disconnect the OBD2 from the ECU?
Basically, disconnect the ECU, and check continuity between the used OBD2 pins and the corresponding pins on the ECU side of the harness.
Why is my OBD2 not communicating with my PCM?
Key off and use a good 10 megaohm impedance ohmmeter to test the pin 5 to ground. If no ground the circuit is broken somewhere between the OBD2 connector and the PCM If the ground is good then it is either a bad connection on pin 2 back to the PCM or a Bad PCM itself, which I suspect is the problem.
However, for cars manufactured from 1996 going forward, you will be expected to follow the above-discussed process. If the check engine light turns back on within a day after you cleared the OBD2 codes, you need to take this as a warning that your car requires to be inspected as this could mean a more serious underlying issue.
How do you reset an OBD2 code without a scanner?
Resetting OBD2 codes without a scanner takes just a few simple steps. Here’s what you’ll need to do: Make sure your car is parked in a level area, then pop open the hood. Remove the (-) cable from the battery. You may need to use a wrench if it’s latched on tightly. Perform the same procedure, but with the (+) cable.
How do you Hard Reset a car ECM?
So back to youtube. Apparently, the scanner sometimes messes the ECM and has to be hard reset. This can be done by removing both battery terminals and crossing or connecting them together for about 10 seconds (make sure both terminals are removed from the battery) this will discharge the capacitors and you should be able to start your car again.
How to clear OBD2 codes with or without a Infinit wheel?
Moreover, you need to confirm that the diagnostic tool can display I/M Monitor Readiness Status. 1. Rotate the keys to the ON position without starting your vehicle. 2. Find the OBDII port below your car’s dashboard and then plug the OBD2 scanner. 3. Once the OBD2 scanner connects to the OBII port, it should power on.