DTC P0115: Engine Coolant Temperature Circuit; DTC P0117: Engine Coolant Temperature Circuit Low Input; DTC P0118: Engine Coolant Temperature Circuit High Input: Description
WARNING: This page is about a different variant/trim than selected.
A thermistor is built into the engine coolant temperature sensor, of which the resistance value varies according to the engine coolant temperature.
The structure of the sensor and its connection to the ECM are the same as those of the intake air temperature sensor.
HINT:
When any of DTCs P0115, P0117 and P0118 are set, the ECM enters fail-safe mode. During fail-safe mode, the engine coolant temperature is estimated to be 80°C (176°F) by the ECM. Fail-safe mode continues until a pass condition is detected.
| DTC No. | Proceed to | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| P0115 | Step 1 | Open or short in engine coolant temperature sensor circuit for 0.5 seconds (1 trip detection logic) |
|
| P0117 | Step 4 | Short in engine coolant temperature sensor circuit for 0.5 seconds (1 trip detection logic) |
|
| P0118 | Step 2 | Open in engine coolant temperature sensor circuit for 0.5 seconds (1 trip detection logic) |
|
HINT:
When any of these DTCs are set, check the engine coolant temperature by selecting the following menu items: Powertrain / Engine and ECT / Data List / All Data / Coolant Temp.
| Temperature Displayed | Malfunctions |
|---|---|
| -40°C (-40°F) | Open circuit |
| 140°C (284°F) | Short circuit |