DTC P0116

DTC P0116  : ECT Sensor 1 Circuit Range/Performance Problem

NOTE:  Before you troubleshoot, review the general troubleshooting information .

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	deg. F
   ECT SENSOR 1	More than 80	deg. C

   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 on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot .

   NO 

   The failure is duplicated. Replace ECT sensor 1 .

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 on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot .

   NO 

   The failure is duplicated. Replace ECT sensor 1 .