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

Quick Answer

The C1235 diagnostic trouble code for Cadillac vehicles indicates a problem with the right rear wheel speed circuit being open or shorted. Common causes include Damaged or faulty wheel speed sensor in the right rear wheel, Corrosion or poor connection in the wiring harness leading to the wheel speed sensor, Faulty ABS module or control unit. 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 Cadillac indicates Right Rear Wheel Speed Circuit Open or Shorted.
Common causes
Common causes include Damaged or faulty wheel speed sensor in the right rear wheel, Corrosion or poor connection in the wiring harness leading to the wheel speed sensor, Faulty ABS module or control unit.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 30, 2024
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Code C1235 Cadillac Description

The C1235 diagnostic trouble code for Cadillac vehicles indicates a problem with the right rear wheel speed circuit being open or shorted. This issue typically involves the ABS (anti-lock braking system) or the traction control system. The wheel speed sensors on each wheel play a crucial role in providing data to these systems, allowing them to monitor individual wheel speeds and make adjustments to optimize braking and traction control. A malfunction in the right rear wheel speed circuit can disrupt the vehicle's ability to maintain stability and control during braking or acceleration.

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

Common Causes of C1235 Cadillac

  1. Damaged or faulty wheel speed sensor in the right rear wheel
  2. Corrosion or poor connection in the wiring harness leading to the wheel speed sensor
  3. Faulty ABS module or control unit
  4. Issues with the wheel bearing or hub assembly affecting sensor readings
  5. Electrical issues such as a blown fuse or relay related to the ABS system

Symptoms of C1235 Cadillac

  1. ABS or traction control warning light illuminated on the dashboard
  2. ABS system kicking in unexpectedly during normal driving conditions
  3. Traction control system not functioning properly
  4. Uneven braking or loss of braking power
  5. Unusual noises coming from the right rear wheel area

How to Fix C1235 Cadillac

  1. Begin by diagnosing the specific cause of the open or shorted circuit, using a scan tool to read the trouble codes and pinpoint the issue.
  2. Inspect the right rear wheel speed sensor and its wiring harness for any damage or corrosion. Replace the sensor if necessary.
  3. Check the connections to the ABS module and ensure they are secure and free of corrosion.
  4. Test the ABS module for functionality and replace if deemed faulty.
  5. Clear the trouble codes, perform a test drive to verify the repair, and reset the ABS system if needed.

Cost to Fix C1235 Cadillac

The cost of repairing a right rear wheel speed circuit open or shorted issue can vary depending on the specific cause of the problem and the parts needed for the repair. In general, the cost can range from $100 to $500 for parts and labor. It is recommended to consult with a professional mechanic or auto repair shop for an accurate estimate based on the vehicle's make and model, as well as the location and labor rates in the area.

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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 Cadillac Code

1. What are common symptoms of OBDII code C1235 in a Cadillac related to the right rear wheel speed circuit?

The common symptoms include the ABS warning light illuminating on the dashboard, traction control system malfunctioning, and potential loss of stability control.

2. What could cause the OBDII code C1235 in a Cadillac indicating a right rear wheel speed circuit open or shorted?

Possible causes include damaged wiring or connectors in the right rear wheel speed sensor circuit, a faulty wheel speed sensor, or issues with the ABS module.

3. How can I diagnose the OBDII code C1235 in a Cadillac for the right rear wheel speed circuit issue?

Diagnosis involves using an OBDII scanner to retrieve the code, inspecting the wiring and connectors for damage, testing the right rear wheel speed sensor, and checking the ABS module for faults.

4. Can I continue driving my Cadillac with the OBDII code C1235 indicating a right rear wheel speed circuit problem?

It is not recommended to continue driving the vehicle with this issue as it can affect the ABS and traction control systems, potentially compromising safety.

5. What are the repair options for fixing the OBDII code C1235 related to the right rear wheel speed circuit in a Cadillac?

Repair options include repairing or replacing damaged wiring or connectors, replacing the right rear wheel speed sensor if faulty, or addressing any issues with the ABS module.

6. Is it necessary to reset the OBDII code C1235 in a Cadillac after repairing the right rear wheel speed circuit problem?

Yes, it is recommended to reset the code using an OBDII scanner after resolving the issue to clear the fault codes and ensure proper functioning of the ABS and traction control systems.

7. How much does it typically cost to repair the OBDII code C1235 in a Cadillac for the right rear wheel speed circuit issue?

The cost of repair can vary depending on the exact cause of the problem, but it may involve expenses for parts and labor, ranging from a few hundred to over a thousand dollars.

8. Are there any preventive maintenance tips to avoid encountering the OBDII code C1235 related to the right rear wheel speed circuit in a Cadillac?

Regularly inspecting the condition of the wheel speed sensors, checking the wiring harness for any signs of wear, and addressing any ABS system warnings promptly can help prevent this issue.

9. Can a DIY enthusiast with automotive knowledge fix the OBDII code C1235 indicating a right rear wheel speed circuit problem in a Cadillac?

While some DIYers may be able to diagnose and repair simple issues like damaged wiring, replacing components like the wheel speed sensor or ABS module may require specialized tools and expertise.

10. How long does it typically take to repair the OBDII code C1235 in a Cadillac for the right rear wheel speed circuit issue?

The repair time can vary based on the specific problem and the complexity of the repair needed, but it may take anywhere from a few hours to a full day for a professional mechanic to address the issue effectively.

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