AutoCodes – Toyota – P0116 Toyota

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

Quick Answer

The engine coolant temperature sensor is used to monitor the engine coolant temperature. Common causes include Low engine coolant level, Faulty Engine Coolant Thermostat, Faulty Engine Coolant Temperature (ECT) sensor. 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 Low engine coolant level, Faulty Engine Coolant Thermostat, Faulty Engine Coolant Temperature (ECT) sensor.
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.

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Code Popularity 37,395

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 23, 2022

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code P0116 Toyota Description

The engine coolant temperature sensor is used to monitor the engine coolant temperature. The engine coolant temperature sensor has a thermistor with a resistance that varies according to the temperature of the engine coolant. When the coolant temperature is low, the resistance in the thermistor increases. When the temperature is high, the resistance drops. These variations in resistance are reflected in the output voltage from the sensor. The Engine Control Module (ECM) monitors the sensor voltage and uses this value to calculate the engine coolant temperature. When the sensor output voltage deviates from the normal operating range, the ECM interprets this as a fault in the engine coolant temperature sensor circuit and stores a Diagnostic Trouble Code (DTC).

OBDII Code P0116 Toyota - Engine Coolant Temperature Circuit Range / Performance Problem - AutoCodes.com — P0116 Toyota Code - Engine Coolant Temperature Circuit Range / Performance Problem

What does this mean?

What are the Possible Causes of the DTC P0116 Toyota?

Low engine coolant level
Faulty Engine Coolant Thermostat
Faulty Engine Coolant Temperature (ECT) sensor
Engine Coolant Temperature sensor harness is open or shorted
Engine Coolant Temperature sensor circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0116 Toyota?

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.

What does this mean?

Code Tech Notes

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.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0116 Toyota 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 Toyota code?

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

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Information for Specific Toyota Models

P0116 1997 Toyota Camry — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 1998 Toyota Camry — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 1999 Toyota Camry — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2000 Toyota Camry — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2001 Toyota Camry — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2006 Toyota Camry — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2007 Toyota Camry — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2008 Toyota Camry — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2009 Toyota Camry — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2010 Toyota Camry — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2011 Toyota Camry — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2001 Toyota Corolla — Engine Coolant Temperature Circuit Range/Performance Problem 3ZZ-FE
P0116 2002 Toyota Corolla — Engine Coolant Temperature Circuit Range/Performance Problem 3ZZ-FE
P0116 2003 Toyota Corolla — Engine Coolant Temperature Circuit Range/Performance Problem 3ZZ-FE
P0116 2004 Toyota Corolla — Engine Coolant Temperature Circuit Range/Performance Problem 3ZZ-FE
P0116 2005 Toyota Corolla — Engine Coolant Temperature Circuit Range/Performance Problem 3ZZ-FE
P0116 2006 Toyota Corolla — Engine Coolant Temperature Circuit Range/Performance Problem 3ZZ-FE
P0116 1999Toyota Echo — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2000 Toyota Echo — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2001 Toyota Echo — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2002 Toyota Echo — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2001 Toyota Highlander — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2002 Toyota Highlander — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2003 Toyota Highlander — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2004 Toyota Highlander — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2005 Toyota Highlander — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2006 Toyota Highlander — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2007 Toyota Highlander — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2004 Toyota Prius — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2005 Toyota Prius — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2006 Toyota Prius — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2007 Toyota Prius — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2008 Toyota Prius — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2009 Toyota Prius — Engine Coolant Temperature Circuit Range/Performance Problem
P0116 2013 Toyota RAV4 — Engine Coolant Temperature Circuit Range / Performance Problem
P0116 2014 Toyota RAV4 — Engine Coolant Temperature Circuit Range / Performance Problem
P0116 2015 Toyota RAV4 — Engine Coolant Temperature Circuit Range / Performance Problem
P0116 2016 Toyota RAV4 — Engine Coolant Temperature Circuit Range / Performance Problem
P0116 2017 Toyota RAV4 — Engine Coolant Temperature Circuit Range / Performance Problem
P0116 2018 Toyota RAV4 — Engine Coolant Temperature Circuit Range / Performance Problem

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.