P118E 2014 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 2014 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 2014 GMC Sierra Description
What are the Possible Causes of the DTC P118E 2014 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 2014 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 2014 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 2014 GMC Sierra Code
1. What does the OBDII code P118E mean on a 2014 GMC Sierra?
P118E indicates a performance issue with Exhaust Gas Temperature (EGT) Sensor 1 while the engine is running. This sensor monitors exhaust temperatures to help regulate emissions and engine performance.
2. What are the common symptoms of a P118E code?
Symptoms may include an illuminated check engine light, poor fuel economy, reduced engine performance, or the vehicle entering limp mode.
3. What causes a P118E code to appear?
Common causes include a faulty EGT sensor, damaged wiring or connectors, soot buildup on the sensor, or issues with the engine control module (ECM).
4. Can I drive with a P118E code on my GMC Sierra?
While the vehicle may still be drivable, driving with this code can lead to reduced performance and potential damage to the exhaust system or catalytic converter.
5. How do you diagnose a P118E code?
Diagnosis involves using a scan tool to confirm the code, inspecting the EGT sensor and wiring for damage, and testing the sensor's resistance and signal output.
6. How do you fix a P118E code on a 2014 GMC Sierra?
Repairs may include replacing the faulty EGT sensor, cleaning soot buildup, repairing damaged wiring or connectors, or reprogramming the ECM if necessary.
7. How much does it cost to fix a P118E code?
The cost varies, but replacing an EGT sensor typically costs $100–$300, including parts and labor. Wiring repairs or ECM reprogramming may increase the expense.
8. Can a dirty EGT sensor trigger a P118E code?
Yes, soot or carbon buildup on the sensor can cause inaccurate readings, leading to a P118E code.
9. How can I prevent the P118E code from returning?
Regular maintenance, such as cleaning the exhaust system and checking sensor connections, can help prevent future issues with the EGT sensor.
10. Does the P118E code affect emissions testing?
Yes, a P118E code can cause your vehicle to fail an emissions test due to improper exhaust temperature regulation.
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