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

- Code Popularity: 31,742 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
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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?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0116 Honda code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code P0116 Honda Description

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).
OBDII Code P0116 Honda - Engine Coolant Temperature Sensor 1 Circuit Range/Performance Problem - AutoCodes.com
P0116 Honda Code - Engine Coolant Temperature Sensor 1 Circuit Range/Performance Problem

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