Where is the Outlet temperature sensor located?

The outlet temperature sensor is located on the cylinder head. This positioning is critical because the cylinder head is where the combustion process takes place and where heat is generated. The sensor's role is to monitor the temperature of the engine's coolant as it exits the engine. Accurate readings from this location allow for effective engine management and can assist in maintaining optimal operating temperatures, ensuring that the engine runs efficiently and preventing overheating.

While the other options may reference locations where various components or sensors could be located in an engine system, the cylinder head is specifically designed to provide valuable temperature data that directly relates to engine performance and health, making it the correct choice for the outlet temperature sensor.