The P0116 trouble code indicates an issue with the range or performance of the engine coolant temperature (ECT) sensor circuit. This code typically points to problems with the sensor responsible for measuring the temperature of the engine coolant, affecting the engine’s performance and fuel efficiency.
Engine Coolant Temperature Circuit Range/Performance
Code symptoms P0116.
1. Engine overheating or running hotter than usual.
2. Changes in fuel efficiency.
3. Malfunction indicator light (MIL) illumination.
This code is common in brands such as:: Chevrolet, Renault, Ford, Toyota, Nissan, Mercedes Benz, Honda.
Causes of the code P0116.
1. Faulty engine coolant temperature sensor.
2. Wiring or connector issues within the sensor circuit.
3. Problems with the Engine Control Module (ECM).
Code Solutions P0116.
1. Inspect and replace the engine coolant temperature sensor if it is faulty.
2. Check and repair any issues with the wiring or connectors in the sensor circuit.
3. If ECM issues are suspected, consult a qualified technician for diagnosis and potential reprogramming or replacement.