AutoCodes – Cadillac – C0235 Cadillac

C0235 Cadillac Code - Open Or Grounded Rear Speed Signal Circuit

Quick Answer

As the wheel spins, the wheel speed sensor produces an Alternating Current (AC) signal. Common causes include Faulty Rear Speed Sensor, Rear Speed Sensor harness is open or shorted, Rear Speed Sensor 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: C0235 Cadillac indicates Open Or Grounded Rear Speed Signal Circuit.
Common causes: Common causes include Faulty Rear Speed Sensor, Rear Speed Sensor harness is open or shorted, Rear Speed Sensor 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 4,640

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 09, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0235 Cadillac Description

As the wheel spins, the wheel speed sensor produces an Alternating Current (AC) signal. The Electronic Brake Control Module (EBCM) uses the frequency of the AC signal to calculate the wheel speed.

OBDII Code C0235 Cadillac - Open Or Grounded Rear Speed Signal Circuit - AutoCodes.com — C0235 Cadillac Code - Open Or Grounded Rear Speed Signal Circuit

What does this mean?

What are the Possible Causes of the DTC C0235 Cadillac?

Faulty Rear Speed Sensor
Rear Speed Sensor harness is open or shorted
Rear Speed Sensor circuit poor electrical connection
Faulty EBCM

How to Fix the DTC C0235 Cadillac?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C0235 Cadillac 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 C0235 Cadillac Code

1. What are the common symptoms of OBDII code C0235 in a Cadillac related to the open or grounded rear speed signal circuit?

- Common symptoms include erratic or non-functional speedometer readings, ABS warning lights, traction control issues, and potential transmission shifting problems.

2. What can cause the open or grounded rear speed signal circuit issue in a Cadillac triggering code C0235?

- The issue can be caused by damaged wiring, a faulty wheel speed sensor, a corroded connector, or a problem with the ABS module.

3. How can I diagnose the open or grounded rear speed signal circuit problem in my Cadillac?

- You can use a multimeter to check for continuity in the wiring, inspect the wheel speed sensor for damage, and scan the ABS system for fault codes to pinpoint the exact cause.

4. Is it safe to drive my Cadillac with OBDII code C0235 triggered by an open or grounded rear speed signal circuit?

- It is not recommended to drive the vehicle in this condition as it can affect the operation of crucial systems like ABS and traction control, potentially compromising safety.

5. Can I fix the open or grounded rear speed signal circuit issue triggering code C0235 in my Cadillac myself?

- Depending on your skills and tools, you may be able to fix the issue yourself by repairing or replacing damaged wiring, connectors, or wheel speed sensors. Otherwise, seek professional help.

6. What are some tips for repairing the open or grounded rear speed signal circuit problem in a Cadillac?

- Ensure proper insulation of repaired wiring, use quality replacement parts, follow manufacturer's guidelines, clear the fault code after repair, and perform a test drive to confirm the fix.

7. Will resetting the fault code related to the open or grounded rear speed signal circuit in my Cadillac make the problem go away?

- Resetting the code may temporarily clear the warning lights, but the underlying issue causing the fault will persist until properly diagnosed and repaired.

8. How much does it typically cost to repair the open or grounded rear speed signal circuit issue in a Cadillac triggering code C0235?

- The cost can vary depending on the extent of the damage, parts needed, and labor rates, but expect a repair bill ranging from $100 to $500 or more at a dealership or repair shop.

9. Is the open or grounded rear speed signal circuit problem covered under warranty for Cadillac vehicles?

- Depending on the vehicle's age and warranty status, the repair may be covered under the manufacturer's warranty, extended warranty, or a recall. Check with your local Cadillac dealership for more information.

10. Can OBDII code C0235 related to the open or grounded rear speed signal circuit affect the overall performance of my Cadillac?

- Yes, the issue can impact the vehicle's speedometer accuracy, ABS functionality, traction control system, and transmission operation, potentially affecting the overall performance and safety of the vehicle.