Engine-CodesHummer – P2135 Hummer

P2135 Hummer Code - Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation

Quick Answer

The P2135 code for Hummer vehicles indicates a problem with the Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation. Common causes include Faulty throttle position sensor, Faulty pedal position sensor, Wiring or connector issues. 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 Hummer indicates Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation.
Common causes
Common causes include Faulty throttle position sensor, Faulty pedal position sensor, Wiring or connector issues.
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 Aug 18, 2024
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Code P2135 Hummer Description

The P2135 code for Hummer vehicles indicates a problem with the Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation. This means that there is a discrepancy between the voltage signals from the throttle position sensor and the pedal position sensor, which are crucial components for the vehicle's electronic throttle control system. The throttle position sensor determines the actual position of the throttle valve, while the pedal position sensor measures how much the driver is pressing the accelerator pedal.

OBDII Code P2135 Hummer - Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation
P2135 Hummer Code - Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation

Common Causes of P2135 Hummer

  1. Faulty throttle position sensor
  2. Faulty pedal position sensor
  3. Wiring or connector issues
  4. Electronic throttle control system malfunction
  5. Corrosion or damage to sensor components

Symptoms of P2135 Hummer

  1. Reduced engine power
  2. Hesitation or jerking during acceleration
  3. Engine stalling
  4. Rough idle
  5. Illumination of the Check Engine Light

How to Fix P2135 Hummer

  1. Diagnose the specific cause using a scan tool to identify which sensor is providing incorrect voltage signals.
  2. Inspect the wiring and connectors for any damage or corrosion, repairing or replacing as needed.
  3. Replace the faulty throttle position sensor or pedal position sensor.
  4. Clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.
  5. Perform a throttle body relearn procedure if necessary to recalibrate the system.

Cost to Fix P2135 Hummer

The cost of repairing the Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation issue can vary depending on the specific cause and the labor rates in your area. In general, replacing a throttle position sensor or pedal position sensor can range from $100 to $200 for the part alone, with additional costs for labor. Overall, the total repair cost for this code may range from $200 to $500, including parts and labor. It's advisable to consult with a qualified mechanic or repair shop for a more accurate estimate based on your vehicle's make and model.

Tech Notes for P2135 Hummer

There is a factory service bulletin for the following HUMMER models:
2008-2009 HUMMER H2
2008-2010 HUMMER H3
HUMMER Factory Service Bulletin OBDII Code P2135

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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 Hummer Code

1. What are the common symptoms of OBDII code P2135 in a Hummer?

- Common symptoms include engine stalling, lack of acceleration, rough idling, and the vehicle going into limp mode.

2. What does OBDII code P2135 on a Hummer indicate?

- The code P2135 indicates a Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation issue.

3. What are the possible causes of OBDII code P2135 in a Hummer?

- Possible causes include a faulty throttle position sensor, pedal position sensor malfunction, wiring issues, or a problem with the electronic throttle control system.

4. How can I diagnose the OBDII code P2135 in my Hummer?

- Diagnose the code by checking the throttle position and pedal position sensors for proper operation, inspecting the wiring for any damage, and using a scan tool to monitor sensor readings.

5. Can I continue driving my Hummer with OBDII code P2135?

- It is not recommended to drive the vehicle with code P2135 as it can lead to unsafe driving conditions and potential damage to the engine.

6. How can I repair OBDII code P2135 in my Hummer?

- Repair options include replacing the faulty throttle position sensor, fixing any wiring issues, or recalibrating the electronic throttle control system.

7. Are there any DIY tips for fixing OBDII code P2135 in a Hummer?

- DIY tips include checking and cleaning the throttle body, inspecting the connectors for corrosion, and ensuring proper sensor alignment during replacement.

8. How much does it typically cost to repair OBDII code P2135 in a Hummer?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $500 for parts and labor.

9. Can a mechanic reset the OBDII code P2135 in my Hummer without fixing the underlying issue?

- While a mechanic can clear the code, it is important to address the underlying problem to prevent the code from reoccurring and causing further issues.

10. Is it common for the Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation issue to occur in Hummer vehicles?

- This issue is relatively common in Hummer vehicles, especially in older models or those with high mileage due to sensor wear and wiring degradation over time.

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