What is the code po118 on a Mazda mpv?

The code PO118 on a Mazda MPV indicates a problem with the engine coolant temperature sensor (ECT). This code typically means that the sensor is reading a temperature that is higher or lower than expected, which can affect engine performance and fuel efficiency. It may be caused by a faulty sensor, wiring issues, or problems with the engine's cooling system. It's advisable to diagnose the issue further and potentially replace the sensor if needed.