P118E 2015 GMC Sierra Code - Exhaust Gas Temperature Sensor 1 Performance Engine Running
Quick Answer
The exhaust gas temperature sensors are variable resistors that measure the temperature of the exhaust gas. Common causes include Faulty Exhaust Gas Temperature Sensor, Exhaust Gas Temperature Sensor harness is open or shorted, Exhaust Gas Temperature Sensor circuit poor electrical connection. 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 Exhaust Gas Temperature Sensor, Exhaust Gas Temperature Sensor harness is open or shorted, Exhaust Gas Temperature Sensor circuit poor electrical connection.
- 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 P118E 2015 GMC Sierra Description
What are the Possible Causes of the DTC P118E 2015 GMC Sierra?
- Faulty Exhaust Gas Temperature Sensor
- Exhaust Gas Temperature Sensor harness is open or shorted
- Exhaust Gas Temperature Sensor circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P118E 2015 GMC Sierra?
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 P118E 2015 GMC Sierra 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 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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