How do you fix a P1626 Theft deterrent System Fuel Enable Circuit Malfunction?

To fix a P1626 Theft Deterrent System Fuel Enable Circuit Malfunction, first, inspect the vehicle's wiring and connectors related to the theft deterrent system for damage, corrosion, or loose connections. Next, check the ignition key for proper coding and ensure that it is not worn or damaged. If these components are in good condition, use a diagnostic scanner to reset the system and see if the code returns; if it does, further investigate the vehicle's theft deterrent module or replace it if necessary. Always consult the vehicle's service manual for specific troubleshooting steps and specifications.