AutoCodes – Chevrolet – P113B 2018 Chevrolet Silverado

P113B 2018 Chevrolet Silverado Code - Exhaust Gas Temperature Sensor 1 Not Plausible

Quick Answer

The exhaust gas temperature sensors are variable resistors that measure the temperature of the exhaust gas at the inlet and outlet of the diesel oxidation catalyst as well as the inlet and outlet of the Diesel Particulate Filter (DPF). 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
P113B 2018 Chevrolet Silverado indicates Exhaust Gas Temperature Sensor 1 Not Plausible.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 278
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 P113B 2018 Chevrolet Silverado Description

The exhaust gas temperature sensors are variable resistors that measure the temperature of the exhaust gas at the inlet and outlet of the diesel oxidation catalyst as well as the inlet and outlet of the Diesel Particulate Filter (DPF). The Engine Control Module (ECM) supplies a bias 5-volt signal to the exhaust gas temperature sensor signal circuit and supplies a ground to the low reference circuit. The exhaust gas temperature information is used by the ECM during the particulate filter cleaning process. The following table illustrates the relationship between the temperature of the exhaust gas and the resistance and voltage of the exhaust gas temperature sensor. The Diagnostic Trouble Code (DTC) will be set if the ECM detects an exhaust gas temperature value that is not plausible when the ignition is switched on.
OBDII Code P113B 2018 Chevrolet Silverado - Exhaust Gas Temperature Sensor 1 Not Plausible - AutoCodes.com
P113B 2018 Chevrolet Silverado Code - Exhaust Gas Temperature Sensor 1 Not Plausible

What are the Possible Causes of the DTC P113B 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 P113B 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 P113B 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 P113B 2018 Chevrolet Silverado code?

Need more information on how to fix the P113B 2018 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 P113B 2018 Chevrolet Silverado Code

What does OBDII code P113B mean on a 2018 Chevrolet Silverado?

P113B indicates an issue with Exhaust Gas Temperature (EGT) Sensor 1, specifically that its readings are not plausible or within expected ranges.

What are the common symptoms of code P113B?

Common symptoms include the check engine light turning on, reduced engine performance, poor fuel efficiency, and potential activation of limp mode.

What causes the P113B code to appear?

Possible causes include a faulty EGT sensor, damaged wiring or connectors, soot buildup on the sensor, or issues with the vehicle's ECM interpreting sensor data.

Can I drive my Silverado with the P113B code active?

Driving with the P113B code is not recommended, as it may lead to reduced performance, increased emissions, and potential damage to the exhaust or engine systems.

How do I diagnose the P113B code on a 2018 Chevrolet Silverado?

Start by scanning for additional codes, inspecting the wiring and connectors for the EGT sensor, and testing the sensor's resistance and voltage with a multimeter.

What tools are needed to fix the P113B code?

You may need an OBDII scanner, a multimeter, basic hand tools, and possibly a replacement EGT sensor, depending on the diagnosis.

How much does it cost to fix the P113B code?

The cost varies depending on the issue. Replacing an EGT sensor typically costs between $100 and $300, including parts and labor.

Can a dirty or clogged EGT sensor cause the P113B code?

Yes, soot buildup or contamination on the EGT sensor can lead to inaccurate readings, triggering the P113B code.

How do I clear the P113B code after repairs?

After completing repairs, use an OBDII scanner to clear the code and verify that it does not return during a test drive.

Can a software update resolve the P113B code?

In some cases, a software update for the ECM may resolve compatibility or calibration issues causing the P113B code. Consult your dealer for details.

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