P118E 2017 Chevrolet Silverado Code - Exhaust Gas Temperature Sensor 1 Performance Engine Running
Quick Answer
The P118E diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado indicates a problem with the Exhaust Gas Temperature (EGT) Sensor 1's performance while the engine is running. Common causes include Faulty EGT Sensor: The sensor itself may be defective or damaged, leading to inaccurate temperature readings, Wiring Issues: Problems with the wiring connecting the EGT sensor to the ECM can cause communication errors and trigger the P118E code, Exhaust System Leaks: Leaks in the exhaust system can affect the EGT sensor's readings, causing 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 2017 Chevrolet Silverado indicates Exhaust Gas Temperature Sensor 1 Performance Engine Running.
- Common causes
- Common causes include Faulty EGT Sensor: The sensor itself may be defective or damaged, leading to inaccurate temperature readings, Wiring Issues: Problems with the wiring connecting the EGT sensor to the ECM can cause communication errors and trigger the P118E code, Exhaust System Leaks: Leaks in the exhaust system can affect the EGT sensor's readings, causing 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.
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Code P118E 2017 Chevrolet Silverado Description
The P118E diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado indicates a problem with the Exhaust Gas Temperature (EGT) Sensor 1's performance while the engine is running. The EGT sensor is a crucial component in monitoring the temperature of the exhaust gases leaving the engine. This information is used by the engine control module (ECM) to adjust fuel delivery and optimize engine performance.
Common Causes of P118E 2017 Chevrolet Silverado
- Faulty EGT Sensor: The sensor itself may be defective or damaged, leading to inaccurate temperature readings.
- Wiring Issues: Problems with the wiring connecting the EGT sensor to the ECM can cause communication errors and trigger the P118E code.
- Exhaust System Leaks: Leaks in the exhaust system can affect the EGT sensor's readings, causing performance issues.
- ECM Malfunction: In rare cases, a malfunction in the engine control module can incorrectly interpret data from the EGT sensor, triggering the code.
Symptoms of P118E 2017 Chevrolet Silverado
- 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.
- Reduced Engine Performance: The engine may experience a decrease in power and overall performance due to incorrect temperature readings from the EGT Sensor 1.
- Poor Fuel Efficiency: A faulty EGT sensor can cause the engine to run inefficiently, leading to increased fuel consumption.
- Rough Idling: The engine may idle roughly or inconsistently if the EGT sensor is not functioning properly.
- Increased Emissions: A malfunctioning EGT sensor can result in higher emissions output from the vehicle.
How to Fix P118E 2017 Chevrolet Silverado
- Diagnose the Issue: Use a diagnostic scanner to retrieve the specific trouble code and pinpoint the exact cause of the problem.
- Inspect EGT Sensor: Check the EGT sensor for any visible damage or signs of wear. Replace the sensor if necessary.
- Check Wiring: Inspect the wiring harness connecting the EGT sensor to the ECM for any breaks, corrosion, or loose connections. Repair or replace as needed.
- Repair Exhaust Leaks: If there are leaks in the exhaust system, repair or replace the affected components to ensure accurate EGT sensor readings.
- Clear Codes and Test: After completing the repairs, clear the DTCs from the ECM and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P118E 2017 Chevrolet Silverado
The cost of repairing a P118E code on a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue. In general, replacing the EGT sensor itself can cost between $100 and $200, while addressing wiring or exhaust system issues may incur additional costs. Labor rates at auto repair shops typically range from $80 to $150 per hour, so the total repair cost could be anywhere from $200 to $500 or more. It's recommended to consult with a professional mechanic for a more accurate estimate based on the specific circumstances of your vehicle.
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Frequently Asked Questions about P118E 2017 Chevrolet Silverado Code
What does the OBDII code P118E mean on a 2017 Chevrolet Silverado?
The P118E code indicates a performance issue with Exhaust Gas Temperature Sensor 1 while the engine is running.
What are the common symptoms of code P118E on a 2017 Chevrolet Silverado?
Symptoms may include a check engine light, reduced fuel efficiency, poor engine performance, or difficulty passing emissions tests.
What causes the P118E code to appear on a 2017 Chevrolet Silverado?
Common causes include a faulty exhaust gas temperature sensor, wiring issues, excessive soot buildup, or an exhaust system malfunction.
Can a faulty Exhaust Gas Temperature Sensor cause engine damage?
If left unresolved, it can lead to improper exhaust gas monitoring and potentially cause damage to the catalytic converter or other exhaust components.
How can I diagnose the P118E code on my Silverado?
Use an OBDII scanner to confirm the code, inspect the exhaust gas temperature sensor and wiring for damage, and check the exhaust system for blockages or leaks.
How do I fix the P118E code on my 2017 Chevrolet Silverado?
Repairs may include replacing the exhaust gas temperature sensor, cleaning or replacing damaged wiring, or addressing issues in the exhaust system.
Is it safe to drive with the P118E code active?
While the vehicle may still operate, driving with this code active can increase emissions, reduce performance, and potentially damage exhaust components over time.
How much does it cost to repair the P118E code on a Silverado?
Repair costs vary but typically range from $150 to $400 depending on whether the sensor, wiring, or exhaust components need replacement.
Can the P118E code be cleared without repairs?
Clearing the code without addressing the underlying issue may temporarily turn off the check engine light but the problem will likely reoccur.
What tools do I need to fix the P118E code?
You may need an OBDII scanner, basic hand tools, a multimeter for electrical testing, and replacement parts like the exhaust gas temperature sensor.
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