Your Dodge Grand Caravan, like all vehicles manufactured after 1996, has an on-board diagnostic system. When one of your Grand Caravan’s sensors indicates that a system is not operating properly, it will trigger the vehicle’s “check engine” light. Sometimes the cause of the error can be as simple as tightening a loose gas cap. In order to verify that the cause of the problem has been fixed, the computer on your Grand Caravan will need to be reset. This process is simple and takes less than 10 minutes.
Step 1: Pull the hood release lever under the dash to release the hood.
Step 2: Locate the hood latch under the center of the hood and push the latch to the left. Lift the hood and open completely.