AutoCodes – Toyota – P1116 2008 Toyota Prius

P1116 2008 Toyota Prius Code - Coolant Temperature Sensor Circuit Stack for Coolant Heat Storage System

Quick Answer

The coolant heat storage (CHS) tank outlet temperature sensor is used for monitoring coolant temperature in the vicinity of the outlet port of the heat storage tank of the CHS system. Common causes include Coolant Heat Storage Tank, Faulty Engine Coolant Temperature (ECT) sensor for CHS (Coolant Heat Storage), Low engine coolant level. 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
P1116 2008 Toyota Prius indicates Coolant Temperature Sensor Circuit Stack for Coolant Heat Storage System.
Common causes
Common causes include Coolant Heat Storage Tank, Faulty Engine Coolant Temperature (ECT) sensor for CHS (Coolant Heat Storage), Low engine coolant level.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 32,695
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 22, 2019
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Code P1116 2008 Toyota Prius Description

The coolant heat storage (CHS) tank outlet temperature sensor is used for monitoring coolant temperature in the vicinity of the outlet port of the heat storage tank of the CHS system. The resistance of the sensor increases when the CHS tank outlet temperature is low, and conversely, the resistance decreases when the temperature is high. The changes in resistance are reflected in the voltage that is output by the sensor. The ECM monitors the sensor voltage and uses this value to control CHS system properly.
OBDII Code P1116 2008 Toyota Prius - Coolant Temperature Sensor Circuit Stack for Coolant Heat Storage System - AutoCodes.com
P1116 2008 Toyota Prius Code - Coolant Temperature Sensor Circuit Stack for Coolant Heat Storage System

What are the Possible Causes of the DTC P1116 2008 Toyota Prius?

  • Coolant Heat Storage Tank
  • Faulty Engine Coolant Temperature (ECT) sensor for CHS (Coolant Heat Storage)
  • Low engine coolant level
  • Engine Coolant Temperature (ECT) sensor for HST harness is open or shorted
  • Engine Coolant Temperature (ECT) sensor for HST electrical circuit poor connection
  • Faulty engine coolant thermostat

How to Fix the DTC P1116 2008 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1116 2008 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 P1116 2008 Toyota Prius code?

Need more information on how to fix the P1116 2008 Toyota Prius code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P1116 2008 Toyota Prius Code

1. What are common symptoms of OBDII code P1116 on a 2008 Toyota Prius?

- Common symptoms include engine overheating, poor fuel efficiency, and potential stalling of the vehicle.

2. What does the OBDII code P1116 indicate in a 2008 Toyota Prius?

- The code P1116 indicates a fault in the Coolant Temperature Sensor Circuit Stack for the Coolant Heat Storage System.

3. What are possible causes of the P1116 code in a 2008 Toyota Prius?

- Possible causes include a faulty coolant temperature sensor, wiring issues, or a malfunction in the coolant heat storage system components.

4. How can I diagnose the P1116 code on my 2008 Toyota Prius?

- Diagnosing the P1116 code may involve checking the coolant temperature sensor, inspecting the wiring for any damage, and testing the components of the coolant heat storage system.

5. Can I still drive my 2008 Toyota Prius with the P1116 code present?

- It is not recommended to drive the vehicle with the P1116 code as it can lead to engine overheating and other serious issues. Immediate attention is advised.

6. How can I repair the Coolant Temperature Sensor Circuit Stack issue on my 2008 Toyota Prius?

- Repairing the issue may involve replacing the faulty coolant temperature sensor, repairing any damaged wiring, or addressing any malfunctioning components in the coolant heat storage system.

7. Will resetting the OBDII code P1116 on my 2008 Toyota Prius fix the issue?

- Simply resetting the code may temporarily clear the error, but it will not fix the underlying problem causing the P1116 code. Proper diagnosis and repair are necessary.

8. Are there any DIY tips for addressing the P1116 code on a 2008 Toyota Prius?

- While some basic checks like inspecting the wiring connections can be done DIY, it's recommended to consult a professional for a thorough diagnosis and repair of the issue.

9. Can a faulty coolant temperature sensor cause other problems in a 2008 Toyota Prius?

- Yes, a faulty coolant temperature sensor can cause issues like incorrect temperature readings, poor fuel efficiency, and potential damage to the engine if not addressed promptly.

10. How important is it to address the P1116 code promptly on a 2008 Toyota Prius?

- It is crucial to address the P1116 code promptly to prevent further damage to the engine, ensure safe operation of the vehicle, and maintain optimal fuel efficiency.

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