P118E 2015 GMC Sierra Code - Exhaust Gas Temperature Sensor 1 Performance Engine Running
Quick Answer
The P118E diagnostic trouble code (DTC) for a 2015 GMC Sierra relates to the Exhaust Gas Temperature (EGT) Sensor 1 Performance while the engine is running. Common causes include Faulty EGT sensor, Wiring issues or electrical connection problems, 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
- P118E 2015 GMC Sierra indicates Exhaust Gas Temperature Sensor 1 Performance Engine Running.
- Common causes
- Common causes include Faulty EGT sensor, Wiring issues or electrical connection problems, 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.
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Code P118E 2015 GMC Sierra Description
The P118E diagnostic trouble code (DTC) for a 2015 GMC Sierra relates to the Exhaust Gas Temperature (EGT) Sensor 1 Performance while the engine is running. This code indicates that the EGT sensor is not functioning properly, which can have significant implications for the vehicle's performance and emissions control system. The EGT sensor is responsible for monitoring the temperature of the exhaust gases leaving the engine, providing crucial data for the engine control module (ECM) to adjust fuel delivery and optimize engine performance.
Common Causes of P118E 2015 GMC Sierra
- Faulty EGT sensor
- Wiring issues or electrical connection problems
- Exhaust system leaks
- ECM malfunction
- Exhaust gas recirculation (EGR) system issues
Symptoms of P118E 2015 GMC Sierra
- Decreased fuel efficiency
- Engine misfires or hesitation
- Illuminated check engine light
- Rough idling or stalling
- Increased exhaust emissions
How to Fix P118E 2015 GMC Sierra
- Diagnose the issue using a scan tool to confirm the P118E code and check for any related codes.
- Inspect the EGT sensor and wiring for damage or corrosion, repairing or replacing as needed.
- Check for exhaust leaks and repair any leaks found in the system.
- Test the EGT sensor's performance using a multimeter or oscilloscope to ensure accurate readings.
- Clear the DTC and test drive the vehicle to verify that the issue has been resolved.
Cost to Fix P118E 2015 GMC Sierra
The typical repair costs for addressing a P118E code on a 2015 GMC Sierra can range from $200 to $500, including parts and labor. However, specific costs can vary depending on the location, vehicle make and model, and the extent of the repairs needed. It's recommended to consult with a local auto repair shop to get a more accurate estimate based on your specific circumstances. Keep in mind that diagnostic time and labor rates can also impact the final cost of the repair.
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Frequently Asked Questions about P118E 2015 GMC Sierra Code
1. What does OBDII code P118E mean on a 2015 GMC Sierra?
P118E indicates a performance issue with Exhaust Gas Temperature (EGT) Sensor 1 while the engine is running, suggesting the sensor is providing out-of-range or inconsistent readings.
2. What are the common symptoms of code P118E?
Symptoms may include a check engine light, reduced engine performance, poor fuel efficiency, increased exhaust emissions, or the vehicle entering limp mode.
3. What causes the P118E code to appear?
Common causes include a faulty EGT sensor, damaged wiring or connectors, excessive soot buildup on the sensor, or an issue with the vehicle's exhaust system.
4. Can I drive my 2015 GMC Sierra with code P118E?
While the vehicle might still be drivable, continued operation can lead to reduced performance, increased emissions, or potential damage to the exhaust system or engine.
5. How do I diagnose the P118E code?
Diagnose the code by inspecting the EGT sensor and its wiring for damage, using a scan tool to monitor sensor readings, and checking for soot buildup or exhaust system blockages.
6. How do I fix the P118E code?
Repairs may involve replacing the faulty EGT sensor, cleaning soot buildup, repairing damaged wiring or connectors, or addressing any exhaust system issues.
7. Where is Exhaust Gas Temperature Sensor 1 located on a 2015 GMC Sierra?
Sensor 1 is typically located in the exhaust system, upstream near the turbocharger or exhaust manifold, depending on the engine configuration.
8. What tools are needed to replace the Exhaust Gas Temperature Sensor?
Tools may include a socket wrench, an oxygen sensor socket or EGT sensor-specific tool, and a scan tool for resetting the trouble code.
9. How much does it cost to fix code P118E on a 2015 GMC Sierra?
The cost can vary but generally ranges from $150 to $300, including parts and labor, depending on the specific repair needed.
10. Will clearing the code with a scan tool fix the issue?
Clearing the code will temporarily turn off the check engine light, but if the underlying issue isn't resolved, the code will likely return.
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