Engine-Codes - Honda - P0116 Honda

P0116 Honda Code - Engine Coolant Temperature Sensor 1 Circuit Range/Performance Problem

- Code Popularity: 31,746 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
Table of contents
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What are the Possible Causes of the DTC P0116 Honda?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Engine Coolant Temperature (ECT) Sensor 1
  • Engine Coolant Temperature Sensor 1 harness is open or shorted
  • Engine Coolant Temperature Sensor 1 circuit poor electrical connection
  • Faulty Powertrain Control Module (PCM)
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How to Fix the DTC P0116 Honda?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P0116 Honda code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P0116 Honda Code Mean?

The Powertrain Control Module (PCM) supplies voltage to the engine coolant temperature signal circuit (about 5 V) through a pull-up resistor. As the engine coolant cools, the Engine Coolant Temperature (ECT) Sensor 1 resistance increases and the PCM detects a high signal voltage. As the engine coolant warms, the ECT Sensor 1 resistance decreases, and the PCM detects a low signal voltage. If the ECT Sensor 1 output voltage does not reach a set temperature after starting the engine and driving at a set time, or when the difference between the ECT Sensor 1 output voltage while driving and the output voltage of ECT Sensor 1 after the engine has been stopped a certain length of time does not change a certain amount, the PCM detects a malfunction and stores a Diagnostic Trouble Code (DTC).
P0116 Honda Code - Engine Coolant Temperature Sensor 1 Circuit Range/Performance Problem

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