AutoCodes – Toyota – P0116 2006 Toyota Highlander

P0116 2006 Toyota Highlander Code - Engine Coolant Temperature 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 2006 Toyota Highlander indicates Engine Coolant Temperature 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.

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Code Popularity 5,028

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0116 2006 Toyota Highlander 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 2006 Toyota Highlander - Engine Coolant Temperature Circuit Range/Performance Problem - AutoCodes.com — P0116 2006 Toyota Highlander Code - Engine Coolant Temperature Circuit Range/Performance Problem

What does this mean?

What are the Possible Causes of the DTC P0116 2006 Toyota Highlander?

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 2006 Toyota Highlander?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0116 2006 Toyota Highlander 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 2006 Toyota Highlander code?

Need more information on how to fix the P0116 2006 Toyota Highlander code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0116 2006 Toyota Highlander code diagnosed by a professional: Find a repair shop in your area

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 2006 Toyota Highlander Code

1. What are common symptoms of OBDII code P0116 in a 2006 Toyota Highlander?

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

2. What can cause the OBDII code P0116 in a 2006 Toyota Highlander?

- The code P0116 is typically triggered by a faulty engine coolant temperature sensor, a wiring issue in the coolant temperature circuit, or low coolant levels.

3. How can I diagnose the Engine Coolant Temperature Circuit Range/Performance Problem in my 2006 Toyota Highlander?

- To diagnose this issue, you can use an OBDII scanner to retrieve the trouble code, visually inspect the coolant temperature sensor and its wiring, and perform a resistance test on the sensor.

4. Can a faulty thermostat cause the OBDII code P0116 in a 2006 Toyota Highlander?

- Yes, a faulty thermostat can cause improper engine coolant temperature readings, leading to the triggering of the P0116 trouble code.

5. What is the repair process for addressing the Engine Coolant Temperature Circuit Range/Performance Problem in a 2006 Toyota Highlander?

- The repair process typically involves replacing the engine coolant temperature sensor, checking and repairing any damaged wiring, and ensuring proper coolant levels and thermostat operation.

6. Is it safe to continue driving a 2006 Toyota Highlander with the OBDII code P0116?

- It is not recommended to drive the vehicle with the P0116 code as it can lead to potential engine damage due to incorrect temperature readings.

7. How much does it typically cost to repair the Engine Coolant Temperature Circuit Range/Performance Problem in a 2006 Toyota Highlander?

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

8. Can a DIY enthusiast fix the OBDII code P0116 in a 2006 Toyota Highlander?

- Yes, if you have the necessary tools and automotive knowledge, you can attempt to fix the P0116 code by replacing the engine coolant temperature sensor and checking the wiring.

9. Will resetting the check engine light resolve the OBDII code P0116 in a 2006 Toyota Highlander?

- Simply resetting the check engine light will not fix the underlying issue causing the P0116 code. It is important to diagnose and resolve the root cause to prevent further problems.

10. How often should the engine coolant temperature sensor be replaced in a 2006 Toyota Highlander?

- The engine coolant temperature sensor does not have a specific replacement interval, but it is recommended to replace it when symptoms of failure appear or during regular maintenance checks every few years.