Engine-CodesToyota – P0117 2016 Toyota RAV4

P0117 2016 Toyota RAV4 Code - Engine Coolant Temperature Circuit Low Input

Quick Answer

The P0117 diagnostic trouble code (DTC) for a 2016 Toyota RAV4 refers to the Engine Coolant Temperature Circuit Low Input. Common causes include Faulty Engine Coolant Temperature (ECT) sensor, Damaged or corroded wiring/connectors in the ECT circuit, ECM software issue. 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
P0117 2016 Toyota RAV4 indicates Engine Coolant Temperature Circuit Low Input.
Common causes
Common causes include Faulty Engine Coolant Temperature (ECT) sensor, Damaged or corroded wiring/connectors in the ECT circuit, ECM software issue.
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.
Table of contents Created and updated by William Orellana on Sep 15, 2024
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Code P0117 2016 Toyota RAV4 Description

The P0117 diagnostic trouble code (DTC) for a 2016 Toyota RAV4 refers to the Engine Coolant Temperature Circuit Low Input. This code indicates that the Engine Control Module (ECM) has detected a lower than expected voltage from the Engine Coolant Temperature (ECT) sensor circuit. The ECT sensor is responsible for monitoring the temperature of the engine coolant and providing this information to the ECM to adjust fuel delivery and ignition timing for optimal performance and efficiency.

OBDII Code P0117 2016 Toyota RAV4 - Engine Coolant Temperature Circuit Low Input
P0117 2016 Toyota RAV4 Code - Engine Coolant Temperature Circuit Low Input

Common Causes of P0117 2016 Toyota RAV4

  1. Faulty Engine Coolant Temperature (ECT) sensor
  2. Damaged or corroded wiring/connectors in the ECT circuit
  3. ECM software issue
  4. Low engine coolant level
  5. Thermostat stuck open

Symptoms of P0117 2016 Toyota RAV4

  1. Check Engine Light illuminated
  2. Poor fuel economy
  3. Rough idling or stalling
  4. Engine overheating
  5. Inaccurate temperature gauge readings

How to Fix P0117 2016 Toyota RAV4

  1. Begin by diagnosing the ECT sensor using a multimeter to check for proper resistance values at different temperatures.
  2. Inspect the wiring and connectors in the ECT circuit for any damage or corrosion, repairing or replacing as necessary.
  3. Check the engine coolant level and top off if low, ensuring there are no leaks in the system.
  4. Test the thermostat to ensure it is functioning correctly, replacing if necessary.
  5. Clear the DTC and test drive the vehicle to verify that the issue has been resolved.

Cost to Fix P0117 2016 Toyota RAV4

The cost of repairing a P0117 code on a 2016 Toyota RAV4 can vary depending on the specific cause of the issue. In general, replacing a faulty ECT sensor can cost between $50 and $150, while addressing wiring or connector issues may range from $50 to $200. If the thermostat needs to be replaced, this can add an additional $100 to $300 to the repair cost. Labor rates at auto repair shops typically range from $80 to $150 per hour, so the total cost can vary based on the time required for diagnosis and repair. It is recommended to consult with a trusted mechanic to get an accurate estimate for your specific situation.

Tech Notes for P0117 2016 Toyota RAV4

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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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 P0117 2016 Toyota RAV4 Code

1. What are the common symptoms of OBDII code P0117 in a 2016 Toyota RAV4?

The common symptoms of code P0117 in a 2016 Toyota RAV4 include a decrease in fuel efficiency, engine overheating, rough idling, and the illumination of the Check Engine Light.

2. What does the OBDII code P0117 "Engine Coolant Temperature Circuit Low Input" mean in a 2016 Toyota RAV4?

Code P0117 indicates that the Engine Control Module (ECM) has detected a lower than normal voltage signal from the Engine Coolant Temperature (ECT) sensor.

3. What are the possible causes of code P0117 in a 2016 Toyota RAV4?

Possible causes of code P0117 in a 2016 Toyota RAV4 include a faulty ECT sensor, a wiring issue in the ECT circuit, low engine coolant levels, or a malfunctioning ECM.

4. How can I diagnose the OBDII code P0117 in my 2016 Toyota RAV4?

To diagnose code P0117, you can start by visually inspecting the ECT sensor and its wiring for any damage. You can also use a multimeter to test the ECT sensor's resistance and voltage output.

5. Can I still drive my 2016 Toyota RAV4 with OBDII code P0117?

It is not recommended to drive your 2016 Toyota RAV4 with code P0117, as it can lead to engine overheating and potential damage. It is best to address the issue promptly.

6. How do I repair OBDII code P0117 in a 2016 Toyota RAV4?

Repairing code P0117 may involve replacing the ECT sensor, repairing any damaged wiring, topping up engine coolant levels, or resetting the ECM after fixing the issue.

7. Is it possible for a loose electrical connection to trigger code P0117 in a 2016 Toyota RAV4?

Yes, a loose or poor electrical connection in the ECT circuit can cause code P0117 to be triggered in a 2016 Toyota RAV4.

8. Will resetting the Check Engine Light make OBDII code P0117 disappear permanently in a 2016 Toyota RAV4?

Resetting the Check Engine Light may temporarily clear the code, but if the underlying issue causing code P0117 is not resolved, the light is likely to come back on.

9. Can extreme weather conditions affect the ECT sensor and trigger code P0117 in a 2016 Toyota RAV4?

Extreme weather conditions such as extreme cold or heat can potentially affect the ECT sensor's performance and trigger code P0117 in a 2016 Toyota RAV4.

10. How much does it typically cost to repair OBDII code P0117 in a 2016 Toyota RAV4?

The cost of repairing code P0117 in a 2016 Toyota RAV4 can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

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