P118F 2017 Chevrolet Silverado Code - Exhaust Gas Temperature Sensor 2 Performance Engine Running
Quick Answer
The P118F diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado indicates a problem with the Exhaust Gas Temperature (EGT) Sensor 2 Performance while the engine is running. Common causes include Faulty EGT Sensor: The sensor itself may be defective or damaged, leading to incorrect temperature readings, Wiring Issues: Problems with the wiring connecting the EGT sensor to the ECM can cause communication errors, ECM Malfunction: A malfunctioning ECM can lead to misinterpretation of the sensor data. 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
- P118F 2017 Chevrolet Silverado indicates Exhaust Gas Temperature Sensor 2 Performance Engine Running.
- Common causes
- Common causes include Faulty EGT Sensor: The sensor itself may be defective or damaged, leading to incorrect temperature readings, Wiring Issues: Problems with the wiring connecting the EGT sensor to the ECM can cause communication errors, ECM Malfunction: A malfunctioning ECM can lead to misinterpretation of the sensor data.
- 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 P118F 2017 Chevrolet Silverado Description
The P118F diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado indicates a problem with the Exhaust Gas Temperature (EGT) Sensor 2 Performance while the engine is running. The EGT sensor is a crucial component in the vehicle's exhaust system that monitors the temperature of the exhaust gases leaving the engine. This sensor provides valuable data to the engine control module (ECM) to help optimize fuel delivery and emission control strategies.
Common Causes of P118F 2017 Chevrolet Silverado
- Faulty EGT Sensor: The sensor itself may be defective or damaged, leading to incorrect temperature readings.
- Wiring Issues: Problems with the wiring connecting the EGT sensor to the ECM can cause communication errors.
- ECM Malfunction: A malfunctioning ECM can lead to misinterpretation of the sensor data.
- Exhaust System Leaks: Leaks in the exhaust system can affect the accuracy of the EGT sensor readings.
- Contamination: The EGT sensor may become contaminated with soot or other debris, affecting its performance.
Symptoms of P118F 2017 Chevrolet Silverado
- Check Engine Light: The most common symptom associated with this code is the illumination of the Check Engine Light on the vehicle's dashboard.
- Reduced Engine Performance: A malfunctioning EGT sensor can lead to decreased engine power and acceleration.
- Poor Fuel Efficiency: Incorrect readings from the EGT sensor can cause the engine to run inefficiently, leading to decreased fuel economy.
- Increased Emissions: A faulty EGT sensor may cause the vehicle to produce higher emissions than normal.
- Engine Overheating: In severe cases, a malfunctioning EGT sensor can lead to engine overheating due to incorrect fuel delivery.
How to Fix P118F 2017 Chevrolet Silverado
- Diagnostic Testing: Begin by using a scan tool to retrieve the specific DTC and perform diagnostic testing to confirm the issue with the EGT sensor.
- Replace EGT Sensor: If the sensor is determined to be faulty, it will need to be replaced with a new one.
- Check Wiring: Inspect the wiring connecting the sensor to the ECM for any signs of damage or corrosion, and repair or replace as needed.
- Clear Codes: After the repair is completed, clear the DTC from the ECM memory using a scan tool to reset the Check Engine Light.
- Test Drive: Take the vehicle for a test drive to ensure that the repair has resolved the issue and that the Check Engine Light does not reappear.
Cost to Fix P118F 2017 Chevrolet Silverado
The cost of repairing a P118F code on a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue and the labor rates in your area. In general, replacing an EGT sensor can cost between $100 and $200 for the part alone. Labor costs can range from $100 to $200, depending on the shop's hourly rates and the complexity of the repair. In total, the repair for this issue could cost between $200 and $400, but it's important to obtain a detailed quote from a trusted auto repair shop to get an accurate estimate. Keep in mind that additional costs may apply if other components need to be replaced or if further diagnostics are required.
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Frequently Asked Questions about P118F 2017 Chevrolet Silverado Code
What does the OBDII code P118F mean on a 2017 Chevrolet Silverado?
P118F indicates a performance issue with Exhaust Gas Temperature Sensor 2, which monitors the temperature of exhaust gases while the engine is running.
What are the symptoms of code P118F on a 2017 Chevrolet Silverado?
Common symptoms include a check engine light, reduced fuel efficiency, possible power loss, and issues with the emissions system.
What causes the P118F code on a 2017 Chevrolet Silverado?
Causes may include a faulty exhaust gas temperature sensor, wiring or connection problems, exhaust leaks, or soot buildup on the sensor.
Can I continue driving with the P118F code on my Silverado?
While the truck may still be drivable, it's best to address the issue promptly to avoid potential damage to the emissions system or reduced engine performance.
How do I diagnose the P118F code on my 2017 Chevrolet Silverado?
Use an OBDII scanner to confirm the fault, inspect the wiring and connections for damage, and check the sensor for soot buildup or malfunction.
How do I fix the P118F code on a 2017 Chevrolet Silverado?
Repairs may involve cleaning or replacing the exhaust gas temperature sensor, repairing damaged wiring, or addressing exhaust leaks.
How much does it cost to repair the P118F code on a Silverado?
The cost varies depending on the repair, but replacing an exhaust temperature sensor typically costs $100–$300, including parts and labor.
Can the P118F code cause long-term damage to my Silverado?
If left unresolved, the issue could lead to damage to the catalytic converter or other emissions components.
Will clearing the P118F code solve the problem?
Clearing the code may temporarily turn off the check engine light, but the issue will return unless the underlying cause is fixed.
How often should I replace the exhaust gas temperature sensor on my Silverado?
There is no set replacement interval; replace it only when it fails or shows signs of malfunction. Regular maintenance can help extend its life.
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