The P0117 trouble code indicates a low input issue within 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 Low Input
Code symptoms P0117.
1. Engine running hotter than usual.
2. Poor 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 P0117.
1. Faulty engine coolant temperature sensor.
2. Low input or voltage within the sensor circuit.
3. Problems with the Engine Control Module (ECM).
Code Solutions P0117.
1. Inspect and replace the engine coolant temperature sensor if it is faulty.
2. Check and repair any low input or voltage issues in the sensor circuit.
3. If ECM issues are suspected, consult a qualified technician for diagnosis and potential reprogramming or replacement.