How do you fix code P0117 on a dodge neon?

Code P0117 indicates a problem with the engine coolant temperature (ECT) sensor circuit, typically due to a low voltage reading. To fix this issue on a Dodge Neon, first, check the ECT sensor and its wiring for any damage or corrosion. If the connections are secure and the wiring is intact, replace the ECT sensor. Finally, clear the code and test drive the vehicle to ensure the issue is resolved.