AutoCodes – Chevrolet – P118E 2015 Chevrolet Silverado

P118E 2015 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 2015 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 242

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 P118E 2015 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 2015 Chevrolet Silverado - Exhaust Gas Temperature Sensor 1 Performance Engine Running - AutoCodes.com — P118E 2015 Chevrolet Silverado Code - Exhaust Gas Temperature Sensor 1 Performance Engine Running

What does this mean?

What are the Possible Causes of the DTC P118E 2015 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 2015 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 2015 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 2015 Chevrolet Silverado code?

Need more information on how to fix the P118E 2015 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 2015 Chevrolet Silverado Code

What does the OBDII code P118E mean on a 2015 Chevrolet Silverado?

The P118E code indicates a performance issue with Exhaust Gas Temperature Sensor 1 while the engine is running, suggesting the sensor is not operating within its expected range.

What are common symptoms of the P118E code on a 2015 Chevrolet Silverado?

Symptoms may include poor fuel efficiency, reduced engine performance, potential overheating, or the Check Engine Light being illuminated.

What causes the P118E code on a 2015 Chevrolet Silverado?

Common causes include a faulty exhaust gas temperature sensor, wiring or connector issues, excessive soot buildup, or problems with the vehicle’s exhaust or emissions system.

Can I drive my 2015 Chevrolet Silverado with a P118E code?

It’s possible to drive for a short time, but ignoring the issue can lead to reduced engine performance or damage to the emissions system, so repairs should be made promptly.

How do I diagnose the P118E code on my 2015 Chevrolet Silverado?

Start by checking the exhaust gas temperature sensor and its wiring for damage, soot buildup, or loose connections. A scan tool can also be used to monitor sensor data for irregularities.

How do I fix the P118E code on a 2015 Chevrolet Silverado?

Repairs may include cleaning or replacing the exhaust gas temperature sensor, repairing damaged wiring or connectors, or addressing any underlying exhaust system issues.

What tools are needed to fix the P118E code?

Common tools include a scan tool for diagnostics, a multimeter for testing wiring, and basic hand tools for sensor replacement or cleaning.

How much does it cost to fix the P118E code on a 2015 Chevrolet Silverado?

Repair costs can vary, ranging from $100-$300 for sensor replacement, depending on labor rates and whether additional exhaust system repairs are needed.

Can a dirty exhaust system cause the P118E code?

Yes, soot or carbon buildup in the exhaust system can affect sensor performance and trigger the P118E code.

How can I prevent the P118E code from occurring again?

Regular maintenance, including cleaning or inspecting the exhaust system and sensors, and addressing Check Engine Light warnings promptly, can help prevent this code from recurring.