AutoCodes – GMC – P113D GMC

P113D GMC Code - Exhaust Gas Temperature Sensor 3 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: P113D GMC indicates Exhaust Gas Temperature Sensor 3 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,354

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P113D GMC 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 P113D GMC - Exhaust Gas Temperature Sensor 3 Not Plausible - AutoCodes.com — P113D GMC Code - Exhaust Gas Temperature Sensor 3 Not Plausible

What does this mean?

What are the Possible Causes of the DTC P113D GMC?

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 P113D GMC?

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 P113D GMC 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 P113D GMC code?

Need more information on how to fix the P113D GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P113D GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

P113D 2014 GMC Sierra — Exhaust Gas Temperature Sensor 3 Not Plausible
P113D 2015 GMC Sierra — Exhaust Gas Temperature Sensor 3 Not Plausible
P113D 2016 GMC Sierra — Exhaust Gas Temperature Sensor 3 Not Plausible
P113D 2017 GMC Sierra — Exhaust Gas Temperature Sensor 3 Not Plausible
P113D 2018 GMC Sierra — Exhaust Gas Temperature Sensor 3 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 P113D GMC Code

1. What does the OBDII code P113D mean on a GMC vehicle?

P113D indicates that the Exhaust Gas Temperature (EGT) Sensor 3 is providing readings that are not plausible or outside the expected range.

2. What are the common symptoms of code P113D on a GMC?

Symptoms may include reduced engine performance, poor fuel efficiency, an illuminated check engine light, and potential issues with the exhaust after-treatment system.

3. What causes the P113D code to appear?

Common causes include a faulty EGT sensor, damaged wiring or connectors, exhaust system leaks, or a malfunctioning Engine Control Module (ECM).

4. Can I drive my GMC with the P113D code active?

Driving with the P113D code is not recommended, as it may lead to further damage to the exhaust system or emission components like the catalytic converter or diesel particulate filter (DPF).

5. How is the P113D code diagnosed?

A mechanic will typically use a scan tool to confirm the code, inspect the EGT sensor and wiring for damage, check for exhaust leaks, and test the sensorâ€™s voltage and resistance.

6. How do you fix the P113D code on a GMC?

Repairs may include replacing the faulty EGT sensor, repairing damaged wiring or connectors, addressing exhaust leaks, or reprogramming/updating the ECM if necessary.

7. What is Exhaust Gas Temperature Sensor 3?

EGT Sensor 3 is a sensor in the exhaust system that monitors the temperature of exhaust gases to help regulate emissions and protect exhaust components.

8. How much does it cost to fix the P113D code on a GMC?

Repair costs can range from $150 to $400 depending on whether the sensor, wiring, or other exhaust components need repair or replacement.

9. Can a clogged diesel particulate filter (DPF) cause the P113D code?

Yes, a clogged DPF can cause abnormal exhaust temperatures, leading to implausible readings from the EGT sensor and triggering the P113D code.

10. Is it necessary to clear the code after repairs?

Yes, after making the necessary repairs, the code should be cleared using a scan tool to ensure the issue is resolved and the check engine light turns off.