Engine-CodesChevrolet – P2135 2018 Chevrolet Silverado

P2135 2018 Chevrolet Silverado Code - Throttle Position Sensors 1-2 Not Plausible

Quick Answer

The P2135 code for a 2018 Chevrolet Silverado indicates a problem with the throttle position sensors 1-2 not being plausible. Common causes include Faulty throttle position sensor, Wiring issues or loose connections, Malfunctioning ECM. 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 position sensor, Wiring issues or loose connections, Malfunctioning ECM.
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.
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code P2135 2018 Chevrolet Silverado Description

The P2135 code for a 2018 Chevrolet Silverado indicates a problem with the throttle position sensors 1-2 not being plausible. This means that the signals from the throttle position sensors are not matching up as expected, causing a discrepancy in the data being sent to the engine control module (ECM). The throttle position sensors are crucial components that monitor the position of the throttle pedal and communicate this information to the ECM, which then adjusts the air-fuel mixture and ignition timing accordingly. When these sensors are not providing accurate data, it can lead to issues with engine performance, fuel efficiency, and overall drivability.

OBDII Code P2135 2018 Chevrolet Silverado - Throttle Position Sensors 1-2 Not Plausible
P2135 2018 Chevrolet Silverado Code - Throttle Position Sensors 1-2 Not Plausible

Common Causes of P2135 2018 Chevrolet Silverado

  1. Faulty throttle position sensor.
  2. Wiring issues or loose connections.
  3. Malfunctioning ECM.
  4. Throttle body problems.
  5. Electronic interference or sensor calibration issues.

Symptoms of P2135 2018 Chevrolet Silverado

  1. Engine hesitation or lack of response when pressing the accelerator pedal.
  2. Rough idling or stalling when coming to a stop.
  3. Reduced fuel efficiency.
  4. Illumination of the Check Engine Light.
  5. Limited engine power or acceleration.

How to Fix P2135 2018 Chevrolet Silverado

  1. Begin by conducting a thorough inspection of the throttle position sensors, wiring, and connections to identify any visible damage or issues.
  2. Use a multimeter to test the throttle position sensors for proper voltage output and resistance.
  3. Check the ECM for any fault codes or malfunctions that could be contributing to the issue.
  4. If necessary, replace the faulty throttle position sensors, repair any damaged wiring, or recalibrate the sensors to ensure accurate readings.
  5. Clear the diagnostic trouble codes from the ECM and perform a test drive to verify that the issue has been resolved.

Cost to Fix P2135 2018 Chevrolet Silverado

The typical repair costs for addressing a P2135 code on a 2018 Chevrolet Silverado can vary depending on the specific cause of the issue. In general, replacing faulty throttle position sensors or repairing wiring issues can range from $200 to $500, including parts and labor. However, additional costs may apply if the ECM needs to be replaced or if other components require attention. It is recommended to consult with a qualified mechanic or dealership for a more accurate estimate based on the specific diagnosis and repair needed. Keep in mind that labor rates at auto repair shops can vary, so it's advisable to inquire about rates in your local area for a more precise cost estimate.

Tech Notes for P2135 2018 Chevrolet Silverado









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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.

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