AutoCodes – Chevrolet – P118E 2017 Chevrolet Silverado

P118E 2017 Chevrolet Silverado 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 2017 Chevrolet Silverado 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.
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Code Popularity 444
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 29, 2024
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Code P118E 2017 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 P118E 2017 Chevrolet Silverado - Exhaust Gas Temperature Sensor 1 Performance Engine Running - AutoCodes.com
P118E 2017 Chevrolet Silverado Code - Exhaust Gas Temperature Sensor 1 Performance Engine Running

What are the Possible Causes of the DTC P118E 2017 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 P118E 2017 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 P118E 2017 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 P118E 2017 Chevrolet Silverado code?

Need more information on how to fix the P118E 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 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.

Discuss the causes and fixes for P118E 2017 Chevrolet Silverado OBDII Code

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