Code P0118 indicates a problem with the engine coolant temperature (ECT) sensor circuit in a 2009 Chrysler PT Cruiser. To fix this issue, first, inspect the ECT sensor and its wiring for damage or corrosion. If the sensor appears faulty, replace it with a new one. Additionally, check the engine’s coolant level and ensure there are no leaks that could affect readings. After repairs, clear the code and test drive the vehicle to ensure the issue is resolved.
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