P1117 2007 Toyota Prius Code - Coolant Temperature Sensor Circuit Stack for Coolant Heat Storage System
Quick Answer
This system uses an electric pump to supply hot coolant stored in the coolant heat storage tank into the cylinder head of the engine, in order to optimize engine starting combustion and reduce the amount of unburned gas that is discharged while the engine is started. 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
- P1117 2007 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.
Code P1117 2007 Toyota Prius Description
What are the Possible Causes of the DTC P1117 2007 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 P1117 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 is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1117 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 P1117 2007 Toyota Prius code?
Need more information on how to fix the P1117 2007 Toyota Prius code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1117 2007 Toyota Prius code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1117 2007 Toyota Prius Code
What does the OBDII code P1117 mean for a 2007 Toyota Prius?
The P1117 code indicates an issue with the coolant temperature sensor circuit related to the coolant heat storage system, which may affect vehicle performance and emissions.
What are the common symptoms of a P1117 code in a 2007 Toyota Prius?
Common symptoms include poor engine performance, overheating, frequent check engine light illumination, and reduced fuel efficiency.
What could cause the P1117 code to trigger in a 2007 Toyota Prius?
Possible causes include a faulty coolant temperature sensor, damaged wiring or connectors in the sensor circuit, or issues with the coolant heat storage system itself.
How can I diagnose a P1117 code in my Toyota Prius?
Start by using an OBDII scanner to confirm the code, then visually inspect the coolant temperature sensor and wiring for damage. You can also test the sensor's resistance and check for any related codes.
What are some common repair solutions for the P1117 code?
Repairs may include replacing a faulty coolant temperature sensor, repairing or replacing damaged wiring or connectors, or addressing any issues with the coolant heat storage system.
Is it safe to drive a 2007 Toyota Prius with a P1117 code?
While it may be safe to drive for a short period, it's recommended to address the issue promptly to avoid potential overheating or further damage to the engine.
How much does it typically cost to fix a P1117 code in a Toyota Prius?
Repair costs can vary widely, but replacing a coolant temperature sensor can range from $100 to $300, depending on labor rates and parts. Comprehensive diagnostics may add to the cost.
Can I clear the P1117 code without making repairs?
Yes, you can clear the code using an OBDII scanner, but if the underlying issue isn’t resolved, the code is likely to return and could lead to more significant problems.
What should I do if the P1117 code keeps coming back after repairs?
If the code persists, further diagnosis is needed to check for other issues, such as a faulty Engine Control Unit (ECU) or additional problems in the coolant heat storage system.
Discuss the causes and fixes for P1117 2007 Toyota Prius OBDII Code
Code P1117 2007 Toyota Prius comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
