AutoCodes – Honda – P0116 1999 Honda Civic

P0116 1999 Honda Civic Code - Engine Coolant Temperature Sensor 1 Circuit Range/Performance Problem

Quick Answer

The Engine Coolant Temperature (ECT) sensor is used to detect the engine coolant temperature. Common causes include Low engine coolant level, Faulty Engine Coolant Temperature (ECT) sensor, Faulty engine coolant thermostat. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0116 1999 Honda Civic indicates Engine Coolant Temperature Sensor 1 Circuit Range/Performance Problem.
Common causes
Common causes include Low engine coolant level, Faulty Engine Coolant Temperature (ECT) sensor, Faulty engine coolant thermostat.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 8,226
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0116 1999 Honda Civic Description

The Engine Coolant Temperature (ECT) sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the Engine Control Module (ECM). The modified signal returns to the ECM as the engine coolant temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.
OBDII Code P0116 1999 Honda Civic - Engine Coolant Temperature Sensor 1 Circuit Range/Performance Problem - AutoCodes.com
P0116 1999 Honda Civic Code - Engine Coolant Temperature Sensor 1 Circuit Range/Performance Problem

What are the Possible Causes of the DTC P0116 1999 Honda Civic?

  • Low engine coolant level
  • Faulty Engine Coolant Temperature (ECT) sensor
  • Faulty engine coolant thermostat
  • Engine Coolant Temperature (ECT) sensor harness is open or shorted
  • Engine Coolant Temperature (ECT) sensor circuit poor electrical connection

How to Fix the DTC P0116 1999 Honda Civic?

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

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0116 1999 Honda Civic code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0116 1999 Honda Civic code?

Need more information on how to fix the P0116 1999 Honda Civic code? Get Access to Factory Service Manuals

Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0116 1999 Honda Civic Code

1. What are the common symptoms of OBDII code P0116 on a 1999 Honda Civic?

The common symptoms of OBDII code P0116 on a 1999 Honda Civic include engine overheating, poor fuel economy, rough idling, and a decrease in overall engine performance.

2. What causes the OBDII code P0116 on a 1999 Honda Civic?

The most common cause of OBDII code P0116 on a 1999 Honda Civic is a faulty engine coolant temperature sensor, which may be malfunctioning or sending incorrect signals to the engine control module.

3. How can I diagnose the OBDII code P0116 on my 1999 Honda Civic?

To diagnose OBDII code P0116 on your 1999 Honda Civic, you can use an OBDII scanner to read the code and check the engine coolant temperature sensor for proper operation. You may also inspect the wiring and connections related to the sensor for any damage or corrosion.

4. Can I continue driving my 1999 Honda Civic with OBDII code P0116?

It is not recommended to continue driving your 1999 Honda Civic with OBDII code P0116, as it can lead to potential engine damage due to incorrect temperature readings. It is best to address the issue promptly to avoid further complications.

5. How do I repair OBDII code P0116 on my 1999 Honda Civic?

To repair OBDII code P0116 on your 1999 Honda Civic, you will need to replace the engine coolant temperature sensor with a new, OEM-quality sensor. Ensure proper installation and secure connections to resolve the circuit range/performance problem.

6. Are there any DIY tips for troubleshooting OBDII code P0116 on a 1999 Honda Civic?

One DIY tip for troubleshooting OBDII code P0116 on a 1999 Honda Civic is to visually inspect the engine coolant temperature sensor and its wiring for any visible damage or loose connections before proceeding with a replacement.

7. Will resetting the OBDII code P0116 on my 1999 Honda Civic make it go away permanently?

Resetting the OBDII code P0116 on your 1999 Honda Civic may temporarily clear the code, but if the underlying issue, such as a faulty engine coolant temperature sensor, is not addressed, the code is likely to reappear.

8. Can a bad thermostat cause the OBDII code P0116 on a 1999 Honda Civic?

A bad thermostat may indirectly contribute to the OBDII code P0116 on a 1999 Honda Civic by affecting the engine coolant temperature readings. However, the primary cause of this code is typically a malfunctioning engine coolant temperature sensor.

9. How much does it cost to replace the engine coolant temperature sensor on a 1999 Honda Civic?

The cost of replacing the engine coolant temperature sensor on a 1999 Honda Civic can vary depending on the location and labor rates, but the part itself typically ranges from $20 to $50, with additional costs for labor if done by a mechanic.

10. Is OBDII code P0116 a serious issue on a 1999 Honda Civic?

OBDII code P0116 on a 1999 Honda Civic is considered a moderate issue that should be addressed promptly to prevent potential engine damage and maintain proper engine performance and fuel efficiency.

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