AutoCodes – Toyota – P0116 2007 Toyota Prius

P0116 2007 Toyota Prius 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 2007 Toyota Prius 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 7,514

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
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0116 2007 Toyota Prius 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 2007 Toyota Prius - Engine Coolant Temperature Circuit Range/Performance Problem - AutoCodes.com — P0116 2007 Toyota Prius Code - Engine Coolant Temperature Circuit Range/Performance Problem

What does this mean?

What are the Possible Causes of the DTC P0116 2007 Toyota Prius?

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 2007 Toyota Prius?

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

If there are no coolant leaks, check/replace the thermostat first, if problem is still there check/replace coolant temperature sensor.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0116 2007 Toyota Prius 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 2007 Toyota Prius code?

Need more information on how to fix the P0116 2007 Toyota Prius code? Get Access to Factory Service Manuals

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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 2007 Toyota Prius Code

1. What are the common symptoms of OBDII code P0116 in a 2007 Toyota Prius?

The common symptoms of OBDII code P0116 in a 2007 Toyota Prius include the engine running hotter or colder than usual, poor fuel economy, rough idling, and potential overheating issues.

2. What does the OBDII code P0116 Engine Coolant Temperature Circuit Range/Performance Problem indicate in a 2007 Toyota Prius?

The OBDII code P0116 indicates that there is a problem with the engine coolant temperature sensor circuit in a 2007 Toyota Prius, specifically relating to a range/performance issue.

3. What are the potential causes of OBDII code P0116 in a 2007 Toyota Prius?

Common causes of OBDII code P0116 in a 2007 Toyota Prius include a faulty engine coolant temperature sensor, wiring issues in the coolant temperature circuit, low coolant levels, or a malfunctioning thermostat.

4. How can I diagnose the OBDII code P0116 in my 2007 Toyota Prius?

To diagnose OBDII code P0116 in a 2007 Toyota Prius, you can use an OBDII scanner to read the code, visually inspect the coolant temperature sensor and its wiring for any visible damage, and test the sensor's resistance using a multimeter.

5. What are some repair tips for fixing OBDII code P0116 in a 2007 Toyota Prius?

Repair tips for OBDII code P0116 in a 2007 Toyota Prius include replacing the engine coolant temperature sensor, repairing any damaged wiring in the coolant temperature circuit, ensuring proper coolant levels, and checking the thermostat for proper operation.

6. Can driving with OBDII code P0116 in a 2007 Toyota Prius cause further damage?

Continuing to drive with OBDII code P0116 in a 2007 Toyota Prius can potentially cause issues like poor engine performance, reduced fuel efficiency, and the risk of engine overheating if the coolant temperature sensor is not functioning properly.

7. How much does it typically cost to repair OBDII code P0116 in a 2007 Toyota Prius?

The cost of repairing OBDII code P0116 in a 2007 Toyota Prius can vary depending on the root cause of the issue, but it may range from $100 to $300 for parts and labor, excluding any additional diagnostic fees.

8. Is it safe to continue driving my 2007 Toyota Prius with OBDII code P0116?

It is not advisable to continue driving your 2007 Toyota Prius with OBDII code P0116, as it can lead to potential engine performance issues and overheating problems. It is recommended to address the issue promptly to prevent further damage.

9. Can I reset the OBDII code P0116 in my 2007 Toyota Prius by disconnecting the battery?

While disconnecting the battery may temporarily clear the OBDII code P0116 in a 2007 Toyota Prius, it will not fix the underlying issue causing the code. It is best to diagnose and repair the root cause of the problem to prevent the code from reoccurring.

10. How long does it take to repair OBDII code P0116 in a 2007 Toyota Prius?

The repair time for OBDII code P0116 in a 2007 Toyota Prius can vary depending on the exact cause of the issue and the complexity of the repair. In general, it may take a few hours to a half-day for a mechanic to diagnose and resolve the problem.