Engine-CodesPontiac – C1235 Pontiac

C1235 Pontiac Code - Right Rear Wheel Speed Circuit Open or Shorted

Quick Answer

The C1235 diagnostic trouble code (DTC) for Pontiac indicates that there is an issue with the right rear wheel speed circuit being open or shorted. Common causes include Faulty right rear wheel speed sensor, Damaged wiring or connectors in the right rear wheel speed circuit, Corrosion or debris affecting the sensor's signal. 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
C1235 Pontiac indicates Right Rear Wheel Speed Circuit Open or Shorted.
Common causes
Common causes include Faulty right rear wheel speed sensor, Damaged wiring or connectors in the right rear wheel speed circuit, Corrosion or debris affecting the sensor's signal.
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 C1235 Pontiac Description

The C1235 diagnostic trouble code (DTC) for Pontiac indicates that there is an issue with the right rear wheel speed circuit being open or shorted. This code is typically associated with the vehicle's anti-lock braking system (ABS) or traction control system. The ABS system relies on wheel speed sensors at each wheel to monitor individual wheel speeds and prevent wheel lock-up during braking. If the right rear wheel speed circuit is open or shorted, the ABS system may not function properly, leading to potential safety concerns.

OBDII Code C1235 Pontiac - Right Rear Wheel Speed Circuit Open or Shorted
C1235 Pontiac Code - Right Rear Wheel Speed Circuit Open or Shorted

Common Causes of C1235 Pontiac

  1. Faulty right rear wheel speed sensor
  2. Damaged wiring or connectors in the right rear wheel speed circuit
  3. Corrosion or debris affecting the sensor's signal
  4. ABS module malfunction
  5. Electronic control unit (ECU) communication issues

Symptoms of C1235 Pontiac

  1. ABS warning light illuminated on the dashboard
  2. Decreased braking performance
  3. Traction control system malfunction
  4. Loss of stability control
  5. Uneven braking pressure distribution

How to Fix C1235 Pontiac

  1. Begin by diagnosing the specific cause of the C1235 code using a diagnostic scanner to pinpoint the issue.
  2. Inspect the right rear wheel speed sensor and its wiring for any damage, corrosion, or loose connections. Replace or repair as needed.
  3. Check the ABS module and ECU for any malfunctions or communication errors. Reset or reprogram as necessary.
  4. Clear the DTC and perform a test drive to ensure the issue has been resolved.
  5. If the problem persists, further troubleshooting may be required, such as checking for additional wiring faults or component failures.

Cost to Fix C1235 Pontiac

The typical repair costs for addressing a C1235 code on a Pontiac can range from $200 to $500, including parts and labor. However, it's important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Rates typically range between $80 and $150 per hour, with rates potentially higher in metropolitan areas or at dealerships, and lower at independent shops. For a more precise estimate, it's recommended to check local rates before proceeding with the repair.

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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 C1235 Pontiac Code

1. What are common symptoms of OBDII code C1235 in a Pontiac?

- Common symptoms include the ABS warning light being illuminated on the dashboard, traction control issues, and potential loss of stability control.

2. What does the OBDII code C1235 for a Pontiac indicate?

- The code C1235 points to a problem with the right rear wheel speed circuit being either open or shorted, affecting the vehicle's ABS and traction control systems.

3. What are possible causes of the right rear wheel speed circuit open or shorted issue in a Pontiac?

- Causes may include damaged wiring, a faulty wheel speed sensor, a corroded connector, or issues with the ABS module.

4. How can I diagnose the right rear wheel speed circuit problem in my Pontiac?

- Diagnosis involves checking the wiring and connectors for damage, testing the right rear wheel speed sensor for proper operation, and inspecting the ABS module for faults.

5. Can I still drive my Pontiac with the C1235 code?

- It is not recommended to drive the vehicle with the C1235 code active, as it can affect the ABS and traction control systems, compromising safety.

6. How can I repair the right rear wheel speed circuit open or shorted issue in my Pontiac?

- Repair typically involves addressing the specific cause of the problem, such as repairing or replacing damaged wiring, replacing the faulty wheel speed sensor, or addressing issues with connectors or the ABS module.

7. Is it necessary to reset the OBDII code C1235 after repairing the issue in a Pontiac?

- Yes, it is important to clear the code after repairing the problem to reset the ABS and traction control systems and ensure proper functionality.

8. Can a DIY enthusiast fix the right rear wheel speed circuit issue in a Pontiac?

- Depending on the skill level and access to tools, a DIY enthusiast may be able to address some causes of the issue, such as replacing a wheel speed sensor or repairing damaged wiring.

9. How much does it cost to repair the right rear wheel speed circuit problem in a Pontiac?

- Repair costs can vary based on the specific cause of the issue and labor rates, but it is recommended to consult with a mechanic for an accurate estimate.

10. Will the ABS and traction control systems function normally after repairing the C1235 code in a Pontiac?

- Once the underlying issue is fixed and the code is cleared, the ABS and traction control systems should resume normal operation in the Pontiac.

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