P1117 Lexus Code - Coolant Temperature Sensor Circuit Stack for Coolant Heat Storage System
Quick Answer
P1117 Lexus indicates Coolant Temperature Sensor Circuit Stack for Coolant Heat Storage System. Common causes include Low engine coolant level, Faulty Engine Coolant Temperature (ECT) sensor for HST, Engine Coolant Temperature (ECT) sensor for HST harness is open or shorted. 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 Lexus indicates Coolant Temperature Sensor Circuit Stack for Coolant Heat Storage System.
- Common causes
- Common causes include Low engine coolant level, Faulty Engine Coolant Temperature (ECT) sensor for HST, Engine Coolant Temperature (ECT) sensor for HST harness is open or shorted.
- 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 Lexus Description
What are the Possible Causes of the DTC P1117 Lexus?
- Low engine coolant level
- Faulty Engine Coolant Temperature (ECT) sensor for HST
- 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 Lexus?
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 Lexus 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.
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Frequently Asked Questions about P1117 Lexus Code
What does the OBDII code P1117 mean for a Lexus?
P1117 indicates a problem with the coolant temperature sensor circuit for the coolant heat storage system in your Lexus.
What are the common symptoms of code P1117 in a Lexus?
Symptoms include the check engine light turning on, poor fuel efficiency, and possible overheating issues.
What causes code P1117 in a Lexus?
This code is often caused by a faulty coolant temperature sensor, damaged wiring, or a malfunctioning coolant heat storage system.
How do I diagnose code P1117 on a Lexus?
Start by inspecting the coolant temperature sensor and its wiring for damage, corrosion, or disconnections. Use a scan tool to check sensor readings.
Can driving with code P1117 cause damage to my Lexus?
Driving with this code may lead to reduced engine efficiency or overheating, which could cause long-term damage if left unresolved.
How do you fix code P1117 on a Lexus?
Repairs may involve replacing the coolant temperature sensor, fixing damaged wiring, or addressing issues with the coolant heat storage system.
How much does it cost to repair code P1117 on a Lexus?
Repair costs vary but typically range from $100 to $300, depending on whether sensor replacement or wiring repair is required.
Can low coolant levels trigger code P1117?
Low coolant levels can indirectly contribute to this code by affecting the performance of the coolant heat storage system.
Is code P1117 common in Lexus vehicles?
Code P1117 is relatively uncommon but may occur in models equipped with a coolant heat storage system.
Can a faulty thermostat cause code P1117 in a Lexus?
While not a primary cause, a malfunctioning thermostat could affect the cooling system’s operation and contribute to related issues.
Discuss the causes and fixes for P1117 Lexus OBDII Code
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