What is a p2181 fault code on a 2008 dodge avenger?

The P2181 fault code on a 2008 Dodge Avenger indicates a problem with the engine coolant temperature (ECT) sensor or the circuit. This code typically signifies that the engine control module (ECM) has detected an abnormal reading from the ECT sensor, which can affect engine performance and fuel efficiency. Common causes include a faulty sensor, wiring issues, or a malfunctioning thermostat. Addressing this code usually involves inspecting the sensor and its connections, as well as checking the coolant system.