C1235 Buick Code - Right Rear Wheel Speed Circuit Open or Shorted
Quick Answer
As the wheel spins, the wheel speed sensor produces an AC signal. Common causes include Faulty Hub Assembly (Right Rear Wheel Speed Sensor is part of hub assembly), Faulty Right Rear Wheel Speed Sensor, Right Rear Wheel Speed Sensor harness is open or shorted. 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 Buick indicates Right Rear Wheel Speed Circuit Open or Shorted.
- Common causes
- Common causes include Faulty Hub Assembly (Right Rear Wheel Speed Sensor is part of hub assembly), Faulty Right Rear Wheel Speed Sensor, Right Rear Wheel Speed Sensor harness is open or shorted.
- 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.
Code C1235 Buick Description
What are the Possible Causes of the DTC C1235 Buick?
- Faulty Hub Assembly (Right Rear Wheel Speed Sensor is part of hub assembly)
- Faulty Right Rear Wheel Speed Sensor
- Right Rear Wheel Speed Sensor harness is open or shorted
- Right Rear Wheel Speed Sensor circuit poor electrical connection
How to Fix the DTC C1235 Buick?
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 C1235 Buick 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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Frequently Asked Questions about C1235 Buick Code
1. What does the OBDII code C1235 mean on a Buick?
C1235 indicates an issue with the right rear wheel speed sensor circuit, such as an open or shorted connection.
2. What are the symptoms of code C1235 in a Buick?
Common symptoms include an illuminated ABS or traction control warning light, loss of ABS functionality, and possible stability control issues.
3. What causes the C1235 code to appear in a Buick?
The code can be triggered by a faulty wheel speed sensor, damaged wiring, corroded connectors, or a malfunctioning ABS module.
4. Can I still drive my Buick with the C1235 code?
Yes, but you should address the issue promptly, as your ABS and traction control systems may not function properly, increasing the risk of skidding.
5. How do you diagnose the C1235 code?
Diagnosis involves scanning for codes, visually inspecting the right rear wheel speed sensor and wiring, and testing the sensor with a multimeter to ensure proper functionality.
6. How do you fix the C1235 code on a Buick?
Repairs may include replacing the right rear wheel speed sensor, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming the ABS module if needed.
7. How much does it cost to fix the C1235 code?
Repair costs vary, but replacing a wheel speed sensor typically ranges from $100 to $300, including parts and labor.
8. Can a bad wheel bearing cause the C1235 code?
Yes, a worn or damaged wheel bearing can affect the wheel speed sensor’s readings and trigger the code.
9. How can I prevent the C1235 code from recurring?
Regularly inspect and maintain the wheel speed sensors, wiring, and connectors, and address any signs of wear or corrosion promptly.
10. Does the C1235 code require reprogramming the ABS module after repairs?
Not always, but if the ABS module is replaced or software updates are needed, reprogramming may be required. Consult a professional for confirmation.
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