AutoCodes – GMC – P2135 2014 GMC Sierra

P2135 2014 GMC Sierra Code - Throttle Position Sensors 1-2 Not Plausible

Quick Answer

The Throttle Body Assembly contains a contact-less inductive throttle position sensing element that is managed by a customized integrated circuit. Common causes include Faulty Throttle Body Assembly, Throttle Body harness is open or shorted, Throttle Body 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: P2135 2014 GMC Sierra indicates Throttle Position Sensors 1-2 Not Plausible.
Common causes: Common causes include Faulty Throttle Body Assembly, Throttle Body harness is open or shorted, Throttle Body 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 386

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 20, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code P2135 2014 GMC Sierra Description

The Throttle Body Assembly contains a contact-less inductive throttle position sensing element that is managed by a customized integrated circuit. The throttle position sensor is mounted within the throttle body assembly and is not serviceable. The Engine Control Module (ECM) supplies the throttle body with a 5 V reference circuit, a low reference circuit. The asynchronous signal means communication is only going from the throttle body to the ECM. The throttle body cannot receive data from the ECM over the signal/serial data circuit. The throttle position sensor provides a signal voltage that changes relative to throttle blade angle. The throttle position sensor information is transmitted between the throttle body and the ECM on the signal/serial data circuit. The ECM decodes the serial data signal and is used as voltages for throttle position sensor 1 and 2. The Diagnostic Trouble Code (DTC) will be set when the ECM detects that throttle position sensors 1 and 2 disagree greater than 7 - 10 percent for greater than 1 s.

OBDII Code P2135 2014 GMC Sierra - Throttle Position Sensors 1-2 Not Plausible - AutoCodes.com — P2135 2014 GMC Sierra Code - Throttle Position Sensors 1-2 Not Plausible

What does this mean?

What are the Possible Causes of the DTC P2135 2014 GMC Sierra?

Faulty Throttle Body Assembly
Throttle Body harness is open or shorted
Throttle Body circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P2135 2014 GMC Sierra?

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 does this mean?

Code Tech Notes

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2135 2014 GMC Sierra 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.

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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 P2135 2014 GMC Sierra Code

1. What does the OBDII code P2135 for a 2014 GMC Sierra mean?

The code P2135 indicates that there is an issue with the throttle position sensors 1-2 not being plausible.

2. What are the common symptoms associated with OBDII code P2135 on a 2014 GMC Sierra?

Common symptoms include a lack of acceleration, reduced engine power, stalling, and the Check Engine light being illuminated.

3. What are the potential causes of OBDII code P2135 on a 2014 GMC Sierra?

Possible causes include a faulty throttle position sensor, damaged wiring or connectors, issues with the throttle body, or problems with the vehicle's electronic control module.

4. How can I diagnose the OBDII code P2135 on my 2014 GMC Sierra?

Diagnosing the issue may involve using a scan tool to check for the specific error code, testing the throttle position sensor's voltage, inspecting the wiring and connectors for damage, and checking the throttle body for any obstructions or malfunctions.

5. Can I continue to drive my 2014 GMC Sierra with the OBDII code P2135?

It is not recommended to continue driving the vehicle with the code P2135 present, as it can lead to further damage and safety issues. It's best to address the problem promptly.

6. How can I repair OBDII code P2135 on my 2014 GMC Sierra?

Repair options may include replacing the faulty throttle position sensor, repairing or replacing damaged wiring or connectors, cleaning or replacing the throttle body, or resetting the electronic control module.

7. Is it possible to reset the OBDII code P2135 on a 2014 GMC Sierra without fixing the underlying issue?

While clearing the code may temporarily turn off the Check Engine light, it will not fix the root cause of the problem. It's essential to address the issue to prevent it from recurring.

8. Can a DIY enthusiast fix the OBDII code P2135 on a 2014 GMC Sierra?

Depending on their skill level and experience, a DIY enthusiast may be able to address the issue by following repair guides and using the necessary tools. However, complex issues may require professional assistance.

9. How much does it cost to repair OBDII code P2135 on a 2014 GMC Sierra?

The cost of repairing the code P2135 can vary based on the specific cause of the issue, the parts needed for replacement, and whether professional labor is required. It's advisable to obtain estimates from mechanics or repair shops.

10. Will fixing the OBDII code P2135 on my 2014 GMC Sierra improve the vehicle's performance?

Correcting the issue indicated by the code P2135 can help restore the vehicle's performance, improve engine power, acceleration, and fuel efficiency, and prevent potential safety hazards associated with throttle malfunctions.