AutoCodes – Generic – P113B

P113B 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 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.

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Code Popularity 5,960

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 P113B 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 - Exhaust Gas Temperature Sensor 1 Not Plausible - AutoCodes.com — P113B Code - Exhaust Gas Temperature Sensor 1 Not Plausible

What does this mean?

What are the Possible Causes of the DTC P113B?

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?

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 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 code?

Need more information on how to fix the P113B code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P113B code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P113B Buick — Exhaust Gas Temperature Sensor 1 Not Plausible
P113B Cadillac — Exhaust Gas Temperature Sensor 1 Not Plausible
P113B Chevrolet — Exhaust Gas Temperature Sensor 1 Not Plausible
P113B GMC — Exhaust Gas Temperature Sensor 1 Not Plausible

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 Code

1. What are the common symptoms of OBDII code P113B (Exhaust Gas Temperature Sensor 1 Not Plausible)?

The common symptoms include poor engine performance, reduced fuel efficiency, and the illumination of the Check Engine light.

2. What are the possible causes of OBDII code P113B?

Possible causes of this code include a faulty exhaust gas temperature sensor, wiring issues, exhaust system leaks, or a malfunctioning engine control module.

3. How serious is OBDII code P113B?

While the severity can vary, it is important to address this code promptly to prevent potential damage to the engine or the catalytic converter.

4. Can I drive my vehicle with OBDII code P113B?

It is generally not recommended to drive your vehicle with this code present, as it can lead to decreased performance and potential long-term damage if left unresolved.

5. How can I diagnose OBDII code P113B?

Diagnosing this code typically involves using a scan tool to read the code, checking the exhaust gas temperature sensor, inspecting the wiring for any damage, and testing the overall functionality of the sensor.

6. How can I repair OBDII code P113B?

Repairing this code may involve replacing the faulty exhaust gas temperature sensor, repairing any damaged wiring, fixing exhaust leaks, or addressing any issues with the engine control module.

7. Can a DIY enthusiast fix OBDII code P113B at home?

Depending on your skill level and access to tools, some DIY enthusiasts may be able to address this code at home. However, if you are unsure, it is best to seek professional assistance.

8. How much does it cost to repair OBDII code P113B?

The cost of repairing this code can vary depending on the specific issue causing it, the labor rates in your area, and whether you choose to address it yourself or take it to a mechanic.

9. Will resetting the Check Engine light resolve OBDII code P113B?

Simply resetting the Check Engine light will not resolve the underlying issue causing the code. It is important to diagnose and repair the root cause to prevent the code from reappearing.

10. How often does OBDII code P113B occur in vehicles?

While the frequency can vary, this code is not uncommon in vehicles with exhaust gas temperature sensor issues or related problems in the exhaust system.