3Read the scan tool. In the event the scan tool code starts with 512

How do I Read a Grand Marquis Examine Engine Code 512? Auto diagnostic tool

1Connect the scan tool towards the Grand Marquis. Follow the scan tool manufacturer's directions.2Turn the engine on and enable the scan tool to diagnose the "Check Engine" codes.

3Read the scan tool. In the event the scan tool code starts with 512 Auto diagnostics, then verify the battery terminals.4Turn the engine off. Open the hood from the vehicle. Make certain both the unfavorable and positive battery cables are connected. Close the hood.

5Turn the engine back on and allow the code to register on the scan tool. If you receive a code 512 after far more, the Grand Marquis Powertrain Control Module is faulty and should be replaced.

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