Do I take off Both Battery Cables,to ResetThe engine check light?

Asked by Jan 29, 2018 at 02:41 AM about the Ford Explorer Sport

Question type: Maintenance & Repair

1999 is the year of my
Ford Exsplorer. Do I disconnect both
Battery cables to Reset the Check engine
light? or just one?

3 Answers

77,895

On an OBD II vehicle such as your Ford, disconnecting the battery will not clear the computer. It must be cleared using a scan tool or code reader. If the problem is really fixed it will also clear itself after a few days of normal driving. HTH. -Jim

2,565

You can try just disconnecting the negative battery terminal. I did this a few years ago on a 2002 Durango. You should leave it disconnected for 5 or 10 minutes and it should clear the codes.

22,945

In any case. For those OBD-1 cars/trucks disconnecting the neg battery cable from battery is all that is needed to cut the power off the electrics and clear codes leave disconnected for a few minutes. Disconnecting both the positive and negative is not needed. Only the negative side.

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