C1235 Mazda Code - Speed Wheel Right Rear Input Signal Missing
Quick Answer
The Anti-Lock Brake System (ABS) Module receives wheel speed readings from each wheel speed sensor and processes this information to determine if an ABS event is necessary. Common causes include Faulty Right Rear ABS Sensor, Right Rear ABS Sensor harness is open or shorted, Right Rear ABS 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
- C1235 Mazda indicates Speed Wheel Right Rear Input Signal Missing.
- Common causes
- Common causes include Faulty Right Rear ABS Sensor, Right Rear ABS Sensor harness is open or shorted, Right Rear ABS 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.
Code C1235 Mazda Description
The active wheel speed sensor generates a signal that is 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. When the ignition is turned to the RUN position, the ABS module carries out a self-test by sending a reference voltage to all of the wheel speed sensors through their circuitry to determine if they are functional.
The ABS module continuously monitors and compares the rotational speed of each wheel and when it detects an impending wheel lock, modulates the brake pressure to the appropriate brake caliper. This is accomplished by triggering the hydraulic control unit (HCU) to open and close the appropriate solenoid valves. Once the affected wheel returns to normal speed, the ABS module returns the solenoid valves to their normal position and normal (base) braking resumes.
What are the Possible Causes of the DTC C1235 Mazda?
- Faulty Right Rear ABS Sensor
- Right Rear ABS Sensor harness is open or shorted
- Right Rear ABS Sensor circuit poor electrical connection
- Faulty Wheel Speed Sensor
- Wheel bearing
How to Fix the DTC C1235 Mazda?
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.
Code Tech Notes
2002 Mercury Mountaineer
2003 Mercury Mountaineer
2004 Mercury Mountaineer
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C1235 Mazda 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 Mazda Code
1. What are the common symptoms of OBDII code C1235 in a Mazda, indicating a Speed Wheel Right Rear Input Signal Missing?
The common symptoms include the ABS warning light illuminating on the dashboard, loss of ABS functionality, and potential traction control issues.
2. What are the possible causes of the C1235 code in a Mazda, indicating a Speed Wheel Right Rear Input Signal Missing?
Possible causes include a faulty wheel speed sensor, damaged wiring or connectors in the sensor circuit, or a malfunctioning ABS module.
3. How can I diagnose the C1235 code related to a Speed Wheel Right Rear Input Signal Missing in my Mazda?
Diagnosis involves visually inspecting the right rear wheel speed sensor and its wiring, performing resistance checks on the sensor, and using a scan tool to monitor sensor data while driving.
4. Can a DIY enthusiast repair the C1235 code in a Mazda related to a Speed Wheel Right Rear Input Signal Missing?
Repairing this issue may require advanced diagnostic tools and expertise. It's recommended to consult a professional mechanic for accurate diagnosis and repair.
5. How much does it typically cost to repair the C1235 code in a Mazda related to a Speed Wheel Right Rear Input Signal Missing?
The cost of repair can vary depending on the exact cause of the issue. It's advisable to get a few quotes from local mechanics to determine the cost for your specific situation.
6. Are there any temporary solutions to consider if I encounter the C1235 code in my Mazda due to a Speed Wheel Right Rear Input Signal Missing?
Resetting the ABS system by disconnecting the battery for a few minutes may temporarily clear the code, but it's crucial to address the underlying issue promptly to ensure safety.
7. Can driving with the C1235 code related to a Speed Wheel Right Rear Input Signal Missing in my Mazda be dangerous?
Driving with this code may compromise the ABS system's functionality, affecting your vehicle's braking performance. It's recommended to address the issue promptly to ensure safe driving.
8. How long does it typically take to repair the C1235 code in a Mazda related to a Speed Wheel Right Rear Input Signal Missing?
The repair time can vary based on the cause of the issue and the mechanic's workload. Some repairs may be completed within a few hours, while others could take longer.
9. Is it necessary to replace the wheel speed sensor when dealing with the C1235 code in a Mazda related to a Speed Wheel Right Rear Input Signal Missing?
Replacing the wheel speed sensor is a common solution for this issue, especially if the sensor is found to be faulty during diagnosis. It's best to follow the recommendations of your mechanic.
10. How can I prevent the recurrence of the C1235 code in my Mazda related to a Speed Wheel Right Rear Input Signal Missing?
Regular maintenance checks, including inspecting wheel speed sensors and their connections, can help prevent the recurrence of this code. Addressing any issues promptly can also contribute to long-term reliability.
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