AutoCodes – Chevrolet – P2135 2018 Chevrolet Silverado

P2135 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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 507

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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado - Throttle Position Sensors 1-2 Not Plausible - AutoCodes.com — P2135 2018 Chevrolet Silverado Code - Throttle Position Sensors 1-2 Not Plausible

What does this mean?

What are the Possible Causes of the DTC P2135 2018 Chevrolet Silverado?

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 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 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 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.

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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 2018 Chevrolet Silverado Code

1. What does the OBDII code P2135 on a 2018 Chevrolet Silverado indicate?

This code indicates that there is a problem with the throttle position sensor 1-2 not being plausible.

2. What are the common symptoms of a P2135 error code in a 2018 Chevrolet Silverado?

Common symptoms include reduced engine power, hesitation or stalling when accelerating, and the vehicle going into limp mode.

3. What are the potential causes of a P2135 code in a 2018 Chevrolet Silverado?

Potential causes include a faulty throttle position sensor, issues with the throttle body, wiring problems, or a problem with the engine control module.

4. How can I diagnose the cause of a P2135 code in my 2018 Chevrolet Silverado?

You can use a diagnostic scanner to read the code and check the throttle position sensor's voltage readings. Inspecting the wiring and connections related to the sensor is also recommended.

5. Can I continue driving my 2018 Chevrolet Silverado with a P2135 error code?

It is not recommended to drive the vehicle with this code as it can affect performance and safety. It's best to address the issue promptly.

6. Is it possible to repair a P2135 code in a 2018 Chevrolet Silverado on my own?

Depending on your mechanical skills, you may be able to replace the throttle position sensor or address wiring issues yourself. However, professional diagnosis and repair are often recommended.

7. How much does it typically cost to fix a P2135 error code in a 2018 Chevrolet Silverado?

The cost can vary depending on the exact cause of the issue. Replacing a faulty throttle position sensor can cost between $100 to $200, but additional repairs may be needed.

8. Can a dirty throttle body cause a P2135 code in a 2018 Chevrolet Silverado?

Yes, a dirty or malfunctioning throttle body can cause incorrect readings from the throttle position sensor, leading to a P2135 error code.

9. Are there any preventive maintenance tips to avoid a P2135 code in a 2018 Chevrolet Silverado?

Regularly cleaning the throttle body, inspecting the wiring harness for any damage, and ensuring proper sensor functionality during routine maintenance can help prevent this issue.

10. How long does it take to repair a P2135 error code in a 2018 Chevrolet Silverado?

The repair time can vary based on the exact cause of the code and the extent of the repairs needed. It can range from a quick sensor replacement to more involved troubleshooting and repairs.