P118F 2014 GMC Sierra Code - Exhaust Gas Temperature Sensor 2 Performance Engine Running
Quick Answer
The P118F diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a problem with the Exhaust Gas Temperature Sensor 2 Performance Engine Running. Common causes include Faulty Exhaust Gas Temperature Sensor, Wiring or connector issues, Exhaust system leaks. 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
- P118F 2014 GMC Sierra indicates Exhaust Gas Temperature Sensor 2 Performance Engine Running.
- Common causes
- Common causes include Faulty Exhaust Gas Temperature Sensor, Wiring or connector issues, Exhaust system leaks.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P118F 2014 GMC Sierra Description
The P118F diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a problem with the Exhaust Gas Temperature Sensor 2 Performance Engine Running. This sensor is responsible for monitoring the temperature of the exhaust gases leaving the engine. The data collected by this sensor is crucial for the engine control module (ECM) to adjust fuel delivery and optimize engine performance. When the ECM detects that the sensor is not performing within the expected parameters while the engine is running, it triggers the P118F code.
Common Causes of P118F 2014 GMC Sierra
- Faulty Exhaust Gas Temperature Sensor
- Wiring or connector issues
- Exhaust system leaks
- ECM software issues
- Exhaust gas temperature sensor circuit malfunction
Symptoms of P118F 2014 GMC Sierra
- Decreased fuel efficiency
- Reduced engine performance
- Rough idling or stalling
- Check Engine Light illuminated
- Increased emissions
How to Fix P118F 2014 GMC Sierra
- Diagnose the issue by using a scan tool to confirm the P118F code and inspecting the exhaust gas temperature sensor and related components.
- Replace the faulty Exhaust Gas Temperature Sensor 2.
- Check and repair any damaged wiring or connectors.
- Inspect the exhaust system for leaks and repair as necessary.
- Clear the DTC and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P118F 2014 GMC Sierra
The cost of repairing a P118F code on a 2014 GMC Sierra can vary depending on the specific cause of the issue and the labor rates in your area. Generally, the cost of replacing the Exhaust Gas Temperature Sensor 2 can range from $100 to $300, with additional costs for any necessary repairs to wiring or the exhaust system. Labor rates at auto repair shops typically range from $80 to $150 per hour, so the total cost of the repair could be between $200 and $500 or more. It's recommended to obtain quotes from local auto repair shops to get a more accurate estimate for your specific situation.
Need more information about the P118F 2014 GMC Sierra code?
Need more information on how to fix the P118F 2014 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P118F 2014 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P118F 2014 GMC Sierra Code
1. What does the OBDII code P118F mean on a 2014 GMC Sierra?
P118F indicates a performance issue with Exhaust Gas Temperature (EGT) Sensor 2 while the engine is running, meaning the sensor is not providing accurate readings.
2. What are the symptoms of the P118F code?
Common symptoms include a check engine light, reduced engine performance, poor fuel efficiency, or the vehicle entering limp mode.
3. What causes the P118F code to appear?
Possible causes include a faulty EGT sensor, damaged wiring or connectors, excessive soot buildup on the sensor, or an issue with the exhaust system.
4. Can I drive my 2014 GMC Sierra with the P118F code active?
It’s not recommended to drive for an extended period with this code, as it can lead to poor performance or damage to the emissions system if not addressed.
5. How do I diagnose the P118F code?
Diagnose the issue by using a scan tool to confirm the code, inspecting the EGT sensor and its wiring for damage, and checking for soot or debris in the exhaust system.
6. How do I fix the P118F code?
Repairs may include replacing the faulty EGT sensor, repairing damaged wiring or connectors, cleaning soot buildup, or addressing any underlying exhaust system issues.
7. Where is Exhaust Gas Temperature Sensor 2 located on a 2014 GMC Sierra?
EGT Sensor 2 is typically located downstream in the exhaust system, often near the diesel particulate filter (DPF) or catalytic converter.
8. What tools are needed to repair the P118F code?
You will need an OBDII scan tool, a multimeter to test wiring, and basic hand tools for sensor replacement. Specialized tools may be required to remove stubborn exhaust components.
9. How much does it cost to fix the P118F code?
Repair costs vary, but replacing an EGT sensor typically ranges from $100 to $300, depending on labor and parts pricing.
10. Can a dirty diesel particulate filter cause the P118F code?
Yes, a clogged DPF can lead to abnormal exhaust temperatures, potentially triggering the P118F code. It’s important to inspect the DPF during diagnosis.
Discuss the causes and fixes for P118F 2014 GMC Sierra OBDII Code
Code P118F 2014 GMC Sierra 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.