C1235 Lincoln Code - Right Rear Wheel Speed Sensor Input Signal Missing
Quick Answer
The C1235 diagnostic trouble code (DTC) for Lincoln vehicles indicates that the right rear wheel speed sensor input signal is missing. Common causes include Faulty right rear wheel speed sensor, Damaged or corroded sensor wiring/connectors, Broken tone ring on the right rear wheel hub. 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 Lincoln indicates Right Rear Wheel Speed Sensor Input Signal Missing.
- Common causes
- Common causes include Faulty right rear wheel speed sensor, Damaged or corroded sensor wiring/connectors, Broken tone ring on the right rear wheel hub.
- 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 C1235 Lincoln Description
The C1235 diagnostic trouble code (DTC) for Lincoln vehicles indicates that the right rear wheel speed sensor input signal is missing. This means that the vehicle's onboard computer system is not receiving data from the right rear wheel speed sensor, which is crucial for the proper functioning of the vehicle's anti-lock braking system (ABS) and traction control system. The wheel speed sensors play a vital role in measuring the speed of each wheel and providing this information to the ABS and traction control systems to help prevent wheel lock-up and skidding during braking and acceleration.
Common Causes of C1235 Lincoln
- Faulty right rear wheel speed sensor
- Damaged or corroded sensor wiring/connectors
- Broken tone ring on the right rear wheel hub
- Issues with the ABS module or control unit
- Electronic control unit (ECU) software glitches or malfunctions
Symptoms of C1235 Lincoln
- ABS warning light illuminated on the dashboard
- Traction control system malfunction warning light activated
- Inconsistent or erratic braking behavior
- Vehicle stability issues during braking or acceleration
- Speedometer and odometer inaccuracies
How to Fix C1235 Lincoln
- Begin by performing a visual inspection of the right rear wheel speed sensor, wiring, and connectors for any visible damage or corrosion.
- Use a multimeter to test the resistance and continuity of the right rear wheel speed sensor to determine if it is faulty.
- Inspect the tone ring on the right rear wheel hub for any cracks or damage that may be affecting sensor readings.
- If the sensor, wiring, or connectors are found to be faulty, replace them with new components.
- Clear the DTC from the vehicle's onboard computer system using an OBD-II scanner and test drive the vehicle to ensure that the issue has been resolved.
Cost to Fix C1235 Lincoln
The typical repair costs for addressing a missing right rear wheel speed sensor input signal can vary depending on the specific cause of the issue and the cost of replacement parts. On average, the cost of replacing a faulty wheel speed sensor can range from $100 to $200, while addressing wiring or connector issues may cost around $50 to $100. Labor costs for this type of repair can range from $100 to $300, depending on the shop's hourly rates and the complexity of the repair. It is advisable to contact local auto repair shops for more precise cost estimates based on your vehicle's make and model.
Tech Notes for C1235 Lincoln
2003-2004 Lincoln Aviator Factory Service Bulletin OBDII Code C1235
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Frequently Asked Questions about C1235 Lincoln Code
1. What does the OBDII code C1235 mean on a Lincoln?
C1235 indicates that the right rear wheel speed sensor input signal is missing or not being detected by the ABS module.
2. What are the common symptoms of code C1235 on a Lincoln?
Symptoms may include an illuminated ABS or traction control warning light, loss of ABS or traction control functionality, and possibly erratic speedometer readings.
3. What causes the C1235 code on a Lincoln?
Common causes include a faulty right rear wheel speed sensor, damaged or corroded wiring, loose connections, or a malfunctioning ABS module.
4. Can a dirty wheel speed sensor cause the C1235 code?
Yes, dirt, debris, or metal shavings on the sensor or tone ring can interfere with the signal and trigger this code.
5. How can I fix the C1235 code on my Lincoln?
Inspect the right rear wheel speed sensor and wiring for damage or corrosion, clean the sensor and tone ring, and replace the sensor if necessary. If the issue persists, test the ABS module.
6. Is it safe to drive with the C1235 code on a Lincoln?
While the vehicle may still be drivable, the ABS and traction control systems may not function properly, reducing safety in slippery conditions.
7. How do I test the right rear wheel speed sensor on a Lincoln?
Use a multimeter to check the sensor's resistance and verify the output signal with an oscilloscope while rotating the wheel to ensure proper function.
8. Can a damaged tone ring cause the C1235 code?
Yes, a damaged or misaligned tone ring can prevent the wheel speed sensor from reading the signal correctly, leading to this code.
9. How much does it cost to repair the C1235 code on a Lincoln?
Repair costs vary but typically range from $100 to $300, depending on whether the issue is with the sensor, wiring, or ABS module.
10. Will clearing the code fix the C1235 issue permanently?
No, simply clearing the code will not fix the underlying problem. You must diagnose and repair the root cause to resolve the issue.
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