DTC P0116: ECT Sensor 1 Range/Performance Problem Honda Insight ZE2

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

1. Turn the ignition switch to ON (II).
2. Check ECT SENSOR 1 in the DATA LIST with the HDS. Is about 176 °F (80 °C) or more, or 0.78 V or less indicated? YES -Go to step 6 . NO -Go to step 3.
3. Quickly note the value of ECT SENSOR 1 in the DATA LIST with the HDS.
4. Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
5. Check ECT SENSOR 1 in the DATA LIST with the HDS. Does ECT SENSOR 1 change 50 °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. NO -Go to step 11 .
6. Quickly note the value of ECT SENSOR 1 in the DATA LIST with the HDS.
7. Turn the ignition switch to LOCK (0).
8. Open the hood, and let the engine cool for 3 hours.
9. Turn the ignition switch to ON (II).
10. Check ECT SENSOR 1 in the DATA LIST with the HDS. Did ECT SENSOR 1 change 50 °F (10 °C) or more from the value in step 6? YES -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at ECT sensor 1 and the PCM. NO -Go to step 11.
11. Turn the ignition switch to LOCK (0).
12. Replace ECT sensor 1 (see «MAF SENSOR/IAT SENSOR REPLACEMENT»(ref-360284-S17985659152010042800000) ).
13. Turn the ignition switch to ON (II).
14. Reset the PCM with the HDS.
15. Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(ref-360285-S23715037572010042800000) ).
16. Check for Pending or Confirmed DTCs with the HDS.

Is DTC P0116 indicated?

YES -Check for poor connections or loose terminals at ECT sensor 1 and the PCM, then go to step 1 .

NO -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.