Engine-Codes.com
Engine-Codes – Toyota – P0116 Toyota

P0116 Toyota Code - Engine Coolant Temperature Circuit Range / Performance Problem

Quick Answer

The P0116 code for Toyota vehicles indicates an issue with the Engine Coolant Temperature (ECT) sensor circuit, specifically related to a range or performance problem. Common causes include Faulty ECT sensor, Wiring issues or poor connections in the ECT sensor circuit, Corrosion or damage to the ECT sensor connector. 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 Toyota indicates Engine Coolant Temperature Circuit Range / Performance Problem.
Common causes
Common causes include Faulty ECT sensor, Wiring issues or poor connections in the ECT sensor circuit, Corrosion or damage to the ECT sensor connector.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P0116 Toyota Description

The P0116 code for Toyota vehicles indicates an issue with the Engine Coolant Temperature (ECT) sensor circuit, specifically related to a range or performance problem. The ECT sensor is responsible for measuring the temperature of the engine coolant and sending this information to the engine control module (ECM). This data is crucial for the ECM to adjust fuel injection, ignition timing, and other engine functions to ensure optimal performance and efficiency.

OBDII Code P0116 Toyota - Engine Coolant Temperature Circuit Range / Performance Problem
P0116 Toyota Code - Engine Coolant Temperature Circuit Range / Performance Problem

Common Causes of P0116 Toyota

  1. Faulty ECT sensor
  2. Wiring issues or poor connections in the ECT sensor circuit
  3. Corrosion or damage to the ECT sensor connector
  4. Coolant leakage affecting the ECT sensor readings
  5. ECM software or hardware issues

Symptoms of P0116 Toyota

  1. Check engine light illuminated on the dashboard
  2. Poor fuel economy
  3. Engine running too cold or too hot
  4. Rough idling or stalling
  5. Engine misfires

How to Fix P0116 Toyota

  1. Begin by diagnosing the ECT sensor and its circuit using a multimeter to check for resistance values and continuity.
  2. Inspect the wiring harness for any damage, corrosion, or loose connections. Repair or replace as necessary.
  3. Check the ECT sensor connector for signs of damage or corrosion. Clean or replace the connector if needed.
  4. Test the ECT sensor by submerging it in a container of hot or cold water and checking the resistance readings. Replace the sensor if it does not match the specifications.
  5. Clear the diagnostic trouble codes from the ECM and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0116 Toyota

The typical repair costs for addressing a P0116 code on a Toyota vehicle can range from $100 to $300, including parts and labor. However, it's important to note that the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops commonly charge between $80 and $150 per hour; however, rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It's advisable to check local rates for a more precise estimate.

What does this mean?

Tech Notes for P0116 Toyota

Start by checking the engine coolant level at the coolant reservoir, a low level may indicate a coolant leak. If the coolant level is correct, you should replace the Engine Coolant Temperature (ECT) sensor to fix the problem. The Engine Coolant Thermostat must be replaced every time there is a repair with the coolant system.



















User Submitted Video

Need more information about the P0116 Toyota code?

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

Need Help with the Code?

Get the P0116 Toyota code diagnosed by a professional: Find a repair shop in your area

Information for Specific Toyota Models

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 Toyota Code

1. What are the common symptoms of OBDII code P0116 in a Toyota?

The common symptoms include engine overheating, rough idling, poor fuel economy, and the check engine light illuminating on the dashboard.

2. What are some possible causes of OBDII code P0116 in a Toyota?

Possible causes include a faulty engine coolant temperature (ECT) sensor, wiring issues in the ECT circuit, low coolant levels, a stuck-open thermostat, or a malfunctioning engine control module (ECM).

3. How can I diagnose the OBDII code P0116 in my Toyota?

Diagnosis involves using a diagnostic scanner to read the code, testing the ECT sensor with a multimeter for proper resistance values, checking the wiring for any damage, and ensuring the coolant level and thermostat are functioning correctly.

4. Can I drive my Toyota with OBDII code P0116?

It is not recommended to drive your Toyota with this code as it can lead to engine damage due to incorrect temperature readings. It's best to address the issue promptly.

5. How can I repair OBDII code P0116 in my Toyota?

Repair options include replacing the faulty ECT sensor, repairing any damaged wiring, topping up coolant levels, replacing the thermostat if necessary, and resetting the ECM after repairs are made.

6. Will resetting the ECM clear the OBDII code P0116 in my Toyota?

Resetting the ECM may temporarily clear the code, but if the underlying issue causing the code is not addressed, the code is likely to reappear after some driving cycles.

7. Is OBDII code P0116 a serious issue in a Toyota?

While it might not cause immediate breakdown or safety concerns, ignoring this code can lead to more severe problems like engine overheating or reduced fuel efficiency over time.

8. How much does it typically cost to repair OBDII code P0116 in a Toyota?

The cost of repairs can vary depending on the exact cause of the issue, but it generally ranges from $100 to $300 for parts and labor.

9. Can a DIY enthusiast fix OBDII code P0116 in a Toyota?

If you have the necessary tools, skills, and knowledge, you may be able to diagnose and repair this code yourself. However, it's recommended to consult a professional if you're unsure about the process.

10. How often does OBDII code P0116 occur in Toyota vehicles?

While not extremely common, OBDII code P0116 can occur in Toyota vehicles, particularly in older models or those with high mileage. Regular maintenance can help prevent this issue from arising.

1. What are the common symptoms of OBDII code P0116 on a Toyota?

- Common symptoms include issues with engine starting, poor fuel economy, overheating, and the check engine light being illuminated.

2. What can cause the OBDII code P0116 in a Toyota?

- Possible causes include a faulty engine coolant temperature sensor, damaged wiring or connectors in the coolant temperature circuit, or low coolant levels.

3. How can I diagnose the OBDII code P0116 on my Toyota?

- You can diagnose this code by using an OBDII scanner to retrieve the code, testing the engine coolant temperature sensor, checking the wiring for damage, and inspecting the coolant levels.

4. Can driving with the OBDII code P0116 in a Toyota cause further damage?

- Driving with this code can potentially cause overheating issues, engine damage, and reduced fuel efficiency. It is recommended to address the issue promptly.

5. What are some repair tips for fixing the OBDII code P0116 on a Toyota?

- Repair tips include replacing the engine coolant temperature sensor, repairing any damaged wiring or connectors, ensuring proper coolant levels, and clearing the code with an OBDII scanner.

6. Is it safe to continue driving my Toyota with the OBDII code P0116 if the engine is not overheating?

- It is not recommended to drive with this code even if the engine is not overheating, as it can still lead to performance issues and potential long-term damage.

7. How much does it typically cost to repair the OBDII code P0116 on a Toyota?

- The cost of repair can vary depending on the specific issue, but it may range from $100 to $300 for parts and labor.

8. Can a DIY enthusiast fix the OBDII code P0116 on a Toyota?

- Yes, some aspects of diagnosing and repairing this code can be done by DIY enthusiasts with the right tools and knowledge. However, it is always recommended to consult a professional if unsure.

9. Will resetting the check engine light resolve the OBDII code P0116 in a Toyota?

- Resetting the check engine light may temporarily clear the code, but it will not fix the underlying issue causing the code to reappear. It is important to address the root cause of the problem.

10. How long does it take to repair the OBDII code P0116 on a Toyota?

- The repair time can vary depending on the exact cause of the code and the availability of parts, but it typically takes 1-2 hours for a professional technician to diagnose and fix the issue.

Discuss the causes and fixes for P0116 Toyota OBDII Code

Submit a New Comment

Code P0116 Toyota comments

No comments found for this page.