You might be thinking that a C1235 code is just another obscure error message, but it’s actually a specific indication of a problem with your vehicle’s right rear wheel speed sensor circuit. This error code is triggered when the sensor or its circuitry malfunctions, causing the ABS and Engine Warning Lights to illuminate. To get to the root of the issue, you’ll need to inspect the sensor and its connections, looking for signs of damage or wear. But before you start troubleshooting, it’s essential to understand the possible causes and symptoms to guarantee you’re on the right track and to confirm you’re addressing the correct issue.
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Key Takeaways
- The C1235 code indicates a fault in the Right Rear Wheel Speed Sensor circuit, affecting the Anti-lock Braking System (ABS) performance.
- Common causes include a faulty wheel speed sensor, open or shorted harness, poor electrical connection, or sensor malfunctioning.
- Symptoms include the illumination of the ABS Warning Light and Engine Light, indicating a problem with the wheel speed sensor circuit.
- To diagnose the issue, inspect the right rear wheel speed sensor and its circuitry, checking for sensor failure, damaged harness, or poor connections.
- Repairing the C1235 code requires a systematic approach, involving a thorough wheel inspection, verification of sensor connection to the ABS module, and replacement of faulty components.
Possible Causes
When your car’s onboard computer generates a C1235 code, it’s indicating a problem with the Right Rear Wheel Speed Sensor circuit. Onboard computer code C1235 signals a problem with the Right Rear Wheel Speed Sensor circuit.
You’re likely dealing with wheel sensor issues, specifically sensor malfunctioning. The possible causes are narrowed down to a few key areas.
You might’ve a faulty Right Rear Wheel Speed Sensor, or the harness could be open or shorted. Another possibility is a poor electrical connection in the sensor circuit.
It’s essential to investigate these potential causes to diagnose and fix the issue.
Description and Function
The Anti-lock Braking System (ABS) relies on the wheel speed sensors to monitor the rotational speed of each wheel.
As you drive, the wheel speed sensor detects the magnetic field of the sensor ring as it passes the face of the active wheel speed sensor. This generates a signal that’s sent to the ABS module.
The wheel speed sensor circuitry connects to the ABS module through 2 wires and a connector at each wheel speed sensor. The ABS module continuously monitors and compares the rotational speed of each wheel, using this data to optimize braking performance and prevent wheel lockup.
How to Fix and Symptoms
Now that you understand how the Anti-lock Braking System (ABS) relies on wheel speed sensors to monitor wheel speed, it’s time to address the symptoms and fixes for the C1235 code.Understanding ABS reliance on wheel speed sensors paves the way for diagnosing and fixing the C1235 code.
You’ll notice the ABS Warning Light and Engine Light are on, indicating a problem.
Check the possible causes listed above, focusing on speed sensor issues and wiring problems.
Visually inspect the related wiring harness and connectors for damaged components, broken, bent, pushed out, or corroded connector pins.
This will help you identify the root cause of the issue and take the necessary steps to fix it.
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OBDII Code C1235 Symptoms
When your vehicle’s onboard computer triggers the C1235 code, it’s usually accompanied by some noticeable symptoms that’ll grab your attention.
You might experience Anti-Lock Brake System (ABS) Warning Light ON or Engine Light ON (or Service Engine Soon Warning Light). Wheel speed issues are likely, and you may need to clean or replace the Right Rear Wheel Speed Sensor.
Faulty sensor readings can cause your vehicle’s ABS module to malfunction, leading to poor braking performance. Sensor cleaning or replacement may resolve the issue, but it’s essential to diagnose the root cause to guarantee your safety on the road and certify that the problem is fully addressed.
Diagnosing the Cause of C1235
Diagnosing the root cause of the C1235 code requires a systematic approach to identify the faulty component or connection.
A systematic approach is essential to pinpoint the faulty component or connection behind the C1235 code.
You’ll need to inspect the right rear wheel speed sensor and its circuitry. Check for Sensor Failure, such as a faulty sensor or a damaged harness.
Perform a thorough Wheel Inspection, looking for signs of wear or damage. Verify that the sensor is properly connected to the ABS module.
Check for poor electrical connections, corrosion, or broken pins. By methodically ruling out each potential cause, you’ll be able to pinpoint the root issue and make the necessary repairs.
Tech Notes and Repair Information
The repair information for code C1235 is crucial in ensuring a successful fix.
You’ll need to utilize diagnostic tools to pinpoint the issue. Start by checking the wheel speed sensor circuitry for damage or corrosion.
Sensor cleaning may be necessary to remove debris that’s affecting the signal. If you’re not comfortable with this process, consider consulting a professional mechanic.
Remember to consult your repair manual or online resources for specific guidance on troubleshooting and repairing the C1235 code.
More OBD-II Codes
| C1211 | C1210 | C1205 | P0332 |
| P1382 | P1456 | C1204 | C1203 |
| P1457 | P1491 | P1773 | P1783 |
| P1788 | P1002 | P1003 | P1013 |
| P1014 | P1015 | P1016 | P1018 |
| P1498 | P1656 | P1658 | P1666 |
Can I Clear the C1235 Code Myself Without a Mechanic?
You can clear the C1235 code yourself using a DIY scan tool, but it’s vital to identify and address the underlying issue first, drawing from personal experience and technical knowledge to avoid recurring problems.
Will a C1235 Code Cause My Car to Fail an Emissions Test?
When a 2012 Honda Civic with a faulty right rear wheel speed sensor triggered a C1235 code, it failed an emissions test due to increased emissions from erratic engine performance. You’ll likely fail an emissions test if your car’s C1235 code causes test failure likelihood, violating emissions standards.
Can a Faulty Wheel Bearing Cause a C1235 Code?
You’re wondering if a faulty wheel bearing can trigger a C1235 code. Yes, it’s possible, as uneven wheel wear patterns and increased bearing noise levels can disrupt the wheel speed sensor’s signal, leading you to investigate this potential cause.
How Long Does It Take to Diagnose the C1235 Code?
You’ll spend around 30 minutes to an hour diagnosing the C1235 code, depending on scan time variability and diagnostic complexity, as you’ll need to inspect wiring harnesses, connectors, and wheel speed sensors to identify the root cause.
Will a C1235 Code Affect My Car’s Fuel Efficiency?
Did you know 15% of vehicles on the road have faulty wheel speed sensors? You’re wondering if a C1235 code will impact your car’s fuel efficiency. The answer is yes, as faulty wheel speed sensors can lead to increased fuel consumption, affecting your fuel economy.
Conclusion
Now that you’ve navigated the twists and turns of the C1235 code, you’re one step closer to getting your car back on the road. Think of this code as a roadmap, guiding you through the troubleshooting process. By following the signs, you’ll uncover the root cause of the issue, whether it’s a faulty sensor or a wiring harness in need of repair. With your newfound knowledge, you’ll be able to shift your car out of diagnostic limbo and into smooth sailing.
