AutoCodes – Toyota – P0116 2002 Toyota Echo

P0116 2002 Toyota Echo 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 2002 Toyota Echo 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 3,455

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 2002 Toyota Echo 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 2002 Toyota Echo - Engine Coolant Temperature Circuit Range/Performance Problem - AutoCodes.com — P0116 2002 Toyota Echo Code - Engine Coolant Temperature Circuit Range/Performance Problem

What does this mean?

What are the Possible Causes of the DTC P0116 2002 Toyota Echo?

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
Cooling System

How to Fix the DTC P0116 2002 Toyota Echo?

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 2002 Toyota Echo 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 2002 Toyota Echo code?

Need more information on how to fix the P0116 2002 Toyota Echo code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0116 2002 Toyota Echo 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 2002 Toyota Echo Code

1. What are the common symptoms of OBDII code P0116 in a 2002 Toyota Echo?

The common symptoms include engine overheating, poor fuel economy, rough idling, and the Check Engine light illuminated on the dashboard.

2. What does the OBDII code P0116 indicate in a 2002 Toyota Echo?

Code P0116 indicates an Engine Coolant Temperature Circuit Range/Performance Problem in the 2002 Toyota Echo's onboard diagnostics system.

3. What are the possible causes of OBDII code P0116 in a 2002 Toyota Echo?

Possible causes include a faulty engine coolant temperature sensor, a damaged or shorted wiring harness, a malfunctioning thermostat, or a problem with the engine's cooling system.

4. How can I diagnose the OBDII code P0116 in my 2002 Toyota Echo?

You can diagnose the code by using an OBDII scanner to retrieve the code, testing the engine coolant temperature sensor's resistance, inspecting the wiring for damage, and checking the cooling system components for proper functionality.

5. Can I still drive my 2002 Toyota Echo with OBDII code P0116?

It is not recommended to drive your vehicle with code P0116 as it can lead to engine overheating and potential damage. It's best to address the issue promptly.

6. How can I repair OBDII code P0116 in my 2002 Toyota Echo?

To repair the code, you may need to replace the engine coolant temperature sensor, repair or replace any damaged wiring, ensure the thermostat is functioning correctly, and check the cooling system for any leaks or issues.

7. Will resetting the Check Engine light fix OBDII code P0116 in my 2002 Toyota Echo?

Simply resetting the Check Engine light will not fix the underlying issue causing code P0116. You need to diagnose the problem and address it accordingly.

8. How much does it cost to repair OBDII code P0116 in a 2002 Toyota Echo?

The cost of repairing code P0116 can vary depending on the specific issue causing the code, but it may range from $100 to $300 for parts and labor.

9. Can a DIY enthusiast fix OBDII code P0116 in a 2002 Toyota Echo?

If you have the necessary tools and knowledge, you may be able to address code P0116 yourself by following repair guides and tutorials. However, it's essential to ensure you understand the repair process to avoid further complications.

10. How long does it take to repair OBDII code P0116 in a 2002 Toyota Echo?

The repair time for code P0116 can vary based on the specific cause of the issue and your level of expertise. It may take anywhere from 1 to 3 hours to diagnose and repair the problem.