DTC P0116: ECT Sensor 1 Circuit Range/Performance Problem

NOTE:  Before you troubleshoot, review the general troubleshooting information - Refer to: How to Troubleshoot the Fuel and Emissions SystemsHow to Troubleshoot the CVT System(CVT System) .

DTC (PGM-FI)

• 1. ECT sensor 1 check:

  - 1. Turn the vehicle to the ON mode.

  - 2. Check the parameter(s) below with the HDS.

  Signal	Threshold		Current conditions
  	Values	Unit	Values	Unit
  ECT SENSOR 1	More than 176	°F

  Do the current condition(s) match the threshold?

  YES 

  Note the value of ECT SENSOR 1, then go to step 3.

  NO 

  Go to step 2.

• 2. Problem verification (low temperature):

  - 1. Note the value of ECT SENSOR 1 in the DATA LIST with the HDS.

  Signal	Current conditions
  	Values	Unit
  ECT SENSOR 1

  - 2. Start the engine.

  - 3. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.

  - 4. Check ECT SENSOR 1 in the DATA LIST with the HDS.

  Signal	Current conditions
  	Values	Unit
  ECT SENSOR 1

  Does ECT SENSOR 1 change 18°F (10°C) or more?

  YES 

  Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 1 and the PCM. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.

  NO 

  The failure is duplicated. Replace ECT sensor 1 - Refer to: ECT Sensor 1 Removal and InstallationECT Sensor 2 Removal and Installation .

• 3. Problem verification (high temperature):

  - 1. Turn the vehicle to the OFF (LOCK) mode.

  - 2. Open the hood, and let the engine cool for 3 hours.

  - 3. Turn the vehicle to the ON mode.

  - 4. Check ECT SENSOR 1 in the DATA LIST with the HDS.

  Signal	Current conditions
  	Values	Unit
  ECT SENSOR 1

  Does ECT SENSOR 1 change 18°F (10°C) or more?

  YES 

  Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 1 and the PCM. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.

  NO 

  The failure is duplicated. Replace ECT sensor 1 - Refer to: ECT Sensor 1 Removal and InstallationECT Sensor 2 Removal and Installation .