1. DTC P0116 description
The engine coolant temperature sensor is installed near the thermostat housing. The engine coolant temperature sensor is a variable resistor and measures the temperature of the engine coolant. If the ECM detects that the difference of the engine coolant temperature is less than the calculated range under the predetermined conditions, the DTC is set. This DTC only runs once per ignition cycle within the effective conditions.
2. Condition for setting DTC P0116
Condition for running the DTC
- The battery voltage is 9 to 16 V.
- The fuel injection quantity is more than or equal to the predetermined value.
- The engine speed is 1,200 rpm or more.
- The vehicle speed is 0 km/h {0 mph} or more.
- DTCs P0117, P0118, P0201, P0202, P0203, P0204, P0500, P060B, and P1655 are not set.
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC P0117 (Flash Code 23) Engine Coolant Temperature Sensor Circuit Low".
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC P0118 (Flash Code 23) Engine Coolant Temperature Sensor Circuit High".
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC P0201 (Flash Code 271) Injector Circuit - Cylinder 1".
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC P0202 (Flash Code 272) Injector Circuit - Cylinder 2".
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC P0203 (Flash Code 273) Injector Circuit - Cylinder 3".
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC P0204 (Flash Code 274) Injector Circuit - Cylinder 4".
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC P0500 (Flash Code 25) Vehicle Speed Sensor".
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC P060B (Flash Code 36) Internal Control Module A/D Processing Performance".
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC P1655 (Flash Code 59) Sensor Reference Voltage 4 Circuit".
Condition for setting the DTC
- The ECM detects that the difference between the maximum and minimum engine coolant temperatures is 5°C {9°F} or less.
3. Action taken when DTC P0116 sets
- Euro4: The ECM illuminates the MIL. Refer to Action taken when DTC sets - Type B (Euro4).
- Except Euro4: The ECM illuminates the check engine warning light. Refer to Action taken when DTC sets - Type B (Except Euro4).
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC type definitions".
- The ECM assumes a default engine coolant temperature value.
- The ECM limits the fuel injection quantity.
- The ECM inhibits pre-injection.
- The ECM inhibits the EGR control.
- The ECM inhibits the cruise control.
4. Condition for clearing DTC P0116
- Euro4: Refer to Condition for clearing the MIL/DTC - Type A or Type B (Euro4).
- Except Euro4: Refer to Condition for clearing the check engine warning light/DTC - Type A or Type B (Except Euro4).
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC type definitions".