How to Reset the Check Engine Light on a Ford Crown Victoria

The Check Engine light on your Ford Crown Victoria indicates a problem with your vehicle's emissions control system. The Check Engine light comes on as a result of the Crown Victoria's computer, called an ECU, generating a trouble code. Once you have fixed the underlying problem, you need to reset the Check Engine light on your Crown Victoria.

Step 1 - Turn the ignition key to the "On" position.

Step 2 - Open the hood and loosen the retaining nut on the negative battery cable clamp.

Step 3 - Slide the clamp off of the negative battery terminal and wait 5 minutes.

Step 4 - Slide the clamp back over the negative battery terminal and tighten the retaining nut.

Verify that the Check Engine light has gone out on the instrument panel.

THINGS YOU'LL NEED: Socket wrench, 10mm socket

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