AutoCodes – Chevrolet – P118F 2018 Chevrolet Silverado

P118F 2018 Chevrolet Silverado Code - Exhaust Gas Temperature Sensor 2 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: P118F 2018 Chevrolet Silverado indicates Exhaust Gas Temperature Sensor 2 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.

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Code Popularity 550

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 29, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P118F 2018 Chevrolet Silverado Description

The exhaust gas temperature sensors are variable resistors that measure the temperature of the exhaust gas. The exhaust temperature sensor 1 is the first exhaust temperature sensor on the exhaust system, the following exhaust temperature sensors are counted upward from the engine outlet to the exhaust system end. The Engine Control Module (ECM) supplies 5 V to the exhaust gas temperature signal circuit and supplies a ground to the low reference circuit. The exhaust gas temperature sensor temperature information is used by the ECM during the exhaust gas particulate filter cleaning process. The Diagnostic Trouble Code (DTC) will be set if the ECM detects that the difference between measured exhaust gas temperature and the estimated exhaust gas temperature is greater than a calibrated amount for greater than 1 s.

OBDII Code P118F 2018 Chevrolet Silverado - Exhaust Gas Temperature Sensor 2 Performance Engine Running - AutoCodes.com — P118F 2018 Chevrolet Silverado Code - Exhaust Gas Temperature Sensor 2 Performance Engine Running

What does this mean?

What are the Possible Causes of the DTC P118F 2018 Chevrolet Silverado?

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 P118F 2018 Chevrolet Silverado?

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 P118F 2018 Chevrolet Silverado 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.

Need more information about the P118F 2018 Chevrolet Silverado code?

Need more information on how to fix the P118F 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P118F 2018 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P118F 2018 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P118F in a 2018 Chevrolet Silverado?

- Common symptoms include reduced engine performance, decreased fuel efficiency, and potential illumination of the Check Engine Light.

2. What does the OBDII code P118F indicate in a 2018 Chevrolet Silverado?

- OBDII code P118F specifically relates to Exhaust Gas Temperature Sensor 2 Performance Engine Running in the 2018 Chevrolet Silverado.

3. What are the possible causes of OBDII code P118F in a 2018 Chevrolet Silverado?

- Possible causes of this code may include a faulty exhaust gas temperature sensor, wiring issues, sensor connection problems, or issues with the exhaust system.

4. How can I diagnose OBDII code P118F in my 2018 Chevrolet Silverado?

- Diagnosing this code typically involves using an OBDII scanner to read the code, checking the exhaust gas temperature sensor and its connections, and inspecting the exhaust system for any visible issues.

5. Can I continue driving my 2018 Chevrolet Silverado with OBDII code P118F?

- It is not recommended to drive your vehicle with this code present, as it can lead to further engine problems and potential damage if left unresolved.

6. How can I repair OBDII code P118F in my 2018 Chevrolet Silverado?

- Repairing this code may involve replacing the faulty exhaust gas temperature sensor, repairing any wiring or connection issues, and ensuring proper functioning of the exhaust system components.

7. Is it possible to reset OBDII code P118F in a 2018 Chevrolet Silverado without fixing the underlying issue?

- While you can clear the code with an OBDII scanner, it is crucial to address the root cause of the problem to prevent the code from reoccurring.

8. Are there any DIY tips for resolving OBDII code P118F in a 2018 Chevrolet Silverado?

- DIY tips may include checking the sensor connections for corrosion, ensuring proper sensor placement, and inspecting the exhaust system for leaks or damage.

9. How much does it typically cost to fix OBDII code P118F in a 2018 Chevrolet Silverado?

- The cost of fixing this code can vary depending on the extent of the issue and whether you choose to address it yourself or seek professional help. Costs may include sensor replacement, labor, and potential additional repairs.

10. Will OBDII code P118F cause any long-term damage to my 2018 Chevrolet Silverado if not addressed promptly?

- Ignoring OBDII code P118F can potentially lead to adverse effects on engine performance, fuel efficiency, and overall engine health if left unresolved for an extended period.