P1117 Chevrolet Code - Engine Coolant Temperature Signal Out-Of-Range Low
Quick Answer
The Engine Coolant Temperature (ECT) sensor contains a semiconductor device which changes resistance based on temperature (a thermistor). Common causes include Low engine coolant level, Faulty Engine Coolant Temperature (ECT) sensor, Engine Coolant Temperature (ECT) sensor 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 Chevrolet indicates Engine Coolant Temperature Signal Out-Of-Range Low.
- Common causes
- Common causes include Low engine coolant level, Faulty Engine Coolant Temperature (ECT) sensor, Engine Coolant Temperature (ECT) sensor 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 Chevrolet Description
When the engine coolant is cold, the sensor (thermistor) resistance is high, and the PCMs signal voltage is only pulled down a small amount through the sensor to ground. The PCM senses a high signal voltage (low temperature). When the engine coolant is warm, the sensor resistance is low, and the signal voltage is pulled down a greater amount. This causes the PCM to sense a low signal voltage (high temperature).
What are the Possible Causes of the DTC P1117 Chevrolet?
- Low engine coolant level
- Faulty Engine Coolant Temperature (ECT) sensor
- Engine Coolant Temperature (ECT) sensor harness is open or shorted
- Engine Coolant Temperature (ECT) sensor electrical circuit poor connection
- Faulty engine coolant thermostat
How to Fix the DTC P1117 Chevrolet?
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 Chevrolet 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 Chevrolet code?
Need more information on how to fix the P1117 Chevrolet code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1117 Chevrolet code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1117 Chevrolet Code
1. What are the common symptoms of OBDII code P1117 in a Chevrolet vehicle?
- Common symptoms include the engine running hotter or colder than normal, poor fuel economy, and potential overheating issues.
2. What are the possible causes of OBDII code P1117 in a Chevrolet?
- Possible causes include a faulty engine coolant temperature sensor, a wiring issue in the coolant temperature sensor circuit, or a problem with the engine control module (ECM).
3. How can I diagnose the cause of OBDII code P1117 in my Chevrolet?
- To diagnose the issue, you can use a scan tool to read the code, test the engine coolant temperature sensor for proper resistance, and check the wiring for any signs of damage or corrosion.
4. Can driving with OBDII code P1117 in a Chevrolet cause further damage to the vehicle?
- Driving with this code may lead to poor engine performance, reduced fuel efficiency, and potential overheating issues if the engine coolant temperature is not accurately regulated.
5. What is the typical repair process for fixing OBDII code P1117 in a Chevrolet?
- The typical repair process involves replacing the faulty engine coolant temperature sensor, repairing any damaged wiring in the circuit, and clearing the code from the ECM.
6. Are there any DIY tips for addressing OBDII code P1117 in a Chevrolet?
- DIY tips include checking the coolant level, inspecting the sensor and its wiring for visible damage, and ensuring proper connections before considering sensor replacement.
7. How much does it usually cost to repair OBDII code P1117 in a Chevrolet?
- The cost of repair can vary depending on the cause of the issue, but on average, replacing the engine coolant temperature sensor can cost between $50 to $150, excluding labor.
8. Is it safe to continue driving my Chevrolet with OBDII code P1117 present?
- It is not recommended to drive the vehicle with this code present, as it can lead to potential engine overheating or other related issues that may cause further damage.
9. How long does it take to repair OBDII code P1117 in a Chevrolet?
- The repair time can vary depending on the complexity of the issue and the availability of parts, but typically, the repair can be completed within a few hours by a professional mechanic.
10. Can resetting the ECM clear OBDII code P1117 in a Chevrolet temporarily?
- Resetting the ECM may temporarily clear the code, but if the underlying issue, such as a faulty sensor or wiring problem, is not addressed, the code is likely to reappear.
Discuss the causes and fixes for P1117 Chevrolet OBDII Code
Code P1117 Chevrolet 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.
