P118E 2016 GMC Sierra Code - Exhaust Gas Temperature Sensor 1 Performance Engine Running
Quick Answer
The P118E code for a 2016 GMC Sierra specifically relates to the Exhaust Gas Temperature (EGT) Sensor 1 performance while the engine is running. Common causes include Faulty EGT Sensor: The most common cause of the P118E code is a malfunctioning or failed EGT sensor, Wiring Issues: Poor electrical connections, damaged wiring, or corrosion can interfere with the EGT sensor's ability to send accurate data to the ECM, Exhaust System Leaks: Leaks in the exhaust system can affect the EGT sensor's readings, leading to performance issues. 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 2016 GMC Sierra indicates Exhaust Gas Temperature Sensor 1 Performance Engine Running.
- Common causes
- Common causes include Faulty EGT Sensor: The most common cause of the P118E code is a malfunctioning or failed EGT sensor, Wiring Issues: Poor electrical connections, damaged wiring, or corrosion can interfere with the EGT sensor's ability to send accurate data to the ECM, Exhaust System Leaks: Leaks in the exhaust system can affect the EGT sensor's readings, leading to performance issues.
- 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 P118E 2016 GMC Sierra Description
The P118E code for a 2016 GMC Sierra specifically relates to the Exhaust Gas Temperature (EGT) Sensor 1 performance while the engine is running. This code indicates that the EGT sensor is not operating within the expected parameters during engine operation. The EGT sensor is responsible for monitoring the exhaust gas temperature to ensure the engine is running efficiently and within safe temperature limits. When this sensor malfunctions or fails to provide accurate data, it can lead to a variety of performance issues and potentially cause long-term damage to the engine.
Common Causes of P118E 2016 GMC Sierra
- Faulty EGT Sensor: The most common cause of the P118E code is a malfunctioning or failed EGT sensor.
- Wiring Issues: Poor electrical connections, damaged wiring, or corrosion can interfere with the EGT sensor's ability to send accurate data to the ECM.
- Exhaust System Leaks: Leaks in the exhaust system can affect the EGT sensor's readings, leading to performance issues.
- ECM Malfunction: A problem with the engine control module (ECM) could also trigger the P118E code by preventing proper communication with the EGT sensor.
Symptoms of P118E 2016 GMC Sierra
- Check Engine Light: The most common symptom associated with the P118E code is the illumination of the check engine light on the vehicle's dashboard.
- Decreased Fuel Efficiency: A faulty EGT sensor can lead to improper fuel delivery, resulting in decreased fuel efficiency and increased fuel consumption.
- Rough Idle: If the EGT sensor is providing inaccurate data to the ECM, it may cause the engine to idle roughly or inconsistently.
- Loss of Power: A malfunctioning EGT sensor can cause the engine to lose power, leading to sluggish acceleration and overall decreased performance.
How to Fix P118E 2016 GMC Sierra
- Diagnose the Issue: Use a diagnostic scanner to retrieve the specific trouble code and further investigate the EGT sensor's performance.
- Inspect EGT Sensor: Check the EGT sensor for any physical damage or signs of malfunction. Replace the sensor if necessary.
- Check Wiring: Inspect the wiring harness connected to the EGT sensor for any damage, corrosion, or loose connections. Repair or replace as needed.
- Clear Codes: After repairing or replacing the EGT sensor and addressing any wiring issues, clear the trouble codes from the ECM to see if the issue has been resolved.
- Test Drive: Take the vehicle for a test drive to ensure that the check engine light does not reappear and that the engine is running smoothly.
Cost to Fix P118E 2016 GMC Sierra
The cost of repairing a P118E code on a 2016 GMC Sierra can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. In general, the cost of replacing an EGT sensor can range from $100 to $300, while addressing wiring issues or other potential causes may increase the overall cost. Additionally, labor rates typically range from $80 to $150 per hour, with total repair costs likely falling between $200 and $500. It's important to note that prices can fluctuate based on location, vehicle make and model, and the extent of the repair needed. It's advisable to consult with a trusted mechanic or repair shop for a more accurate estimate.
Need more information about the P118E 2016 GMC Sierra code?
Need more information on how to fix the P118E 2016 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P118E 2016 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P118E 2016 GMC Sierra Code
What does the OBDII code P118E mean on a 2016 GMC Sierra?
P118E indicates an issue with the Exhaust Gas Temperature (EGT) Sensor 1, specifically a performance problem while the engine is running.
What are the symptoms of code P118E on a 2016 GMC Sierra?
Common symptoms include the check engine light being illuminated, reduced fuel efficiency, potential soot buildup, and possible limp mode activation.
What causes the P118E code to appear on a GMC Sierra?
Possible causes include a faulty EGT sensor, damaged wiring or connectors, excessive soot buildup on the sensor, or an issue with the engine control module (ECM).
Can I drive with the P118E code active on my 2016 GMC Sierra?
It is not recommended to drive with this code active as it may lead to reduced engine performance or damage to the exhaust aftertreatment system.
How do I diagnose the P118E code on a GMC Sierra?
Diagnosis typically involves using an OBDII scanner to confirm the code, inspecting the EGT sensor and its wiring for damage, and checking for soot buildup or other exhaust system issues.
How can I fix the P118E code on my 2016 GMC Sierra?
Repairs may include replacing the faulty EGT sensor, cleaning or repairing damaged wiring, clearing soot buildup, or updating the ECM software if necessary.
How much does it cost to repair the P118E code on a GMC Sierra?
The cost varies depending on the repair needed. Replacing the EGT sensor typically costs between $150 and $300, including parts and labor.
What role does the EGT sensor play in my GMC Sierra?
The EGT sensor monitors the temperature of exhaust gases to ensure proper operation of the exhaust aftertreatment system and to prevent overheating.
Can a faulty EGT sensor cause engine damage in a GMC Sierra?
Yes, if the sensor is not functioning correctly, it can lead to overheating or damage to the exhaust aftertreatment components, such as the catalytic converter or diesel particulate filter.
What tools are needed to troubleshoot the P118E code?
You’ll need an OBDII scanner, a multimeter for testing wiring and sensor output, and potentially basic hand tools to access and inspect the sensor.
Discuss the causes and fixes for P118E 2016 GMC Sierra OBDII Code
Code P118E 2016 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.