C1237 Mercury Code - Speed Wheel Rear Input Signal Missing
Quick Answer
The Anti-Lock Brake System (ABS) Actuator And Electric Unit (Control Unit) monitors the Rear Anti-Lock Brake Sensor. Common causes include Faulty Rear ABS Sensor, Rear ABS Sensor harness is open or shorted, 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
- C1237 Mercury indicates Speed Wheel Rear Input Signal Missing.
- Common causes
- Common causes include Faulty Rear ABS Sensor, Rear ABS Sensor harness is open or shorted, 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 C1237 Mercury Description
What are the Possible Causes of the DTC C1237 Mercury?
- Faulty Rear ABS Sensor
- Rear ABS Sensor harness is open or shorted
- Rear ABS Sensor circuit poor electrical connection
- Faulty Wheel Speed Sensor
- Wheel bearing
How to Fix the DTC C1237 Mercury?
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
2002-2004 Mercury Mountaineer Factory Service Bulletin OBDII Code C1237
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C1237 Mercury 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 C1237 Mercury Code
1. What does the OBDII code C1237 mean on a Mercury vehicle?
The C1237 code indicates that the rear wheel speed sensor input signal is missing or not being detected by the ABS module.
2. What are the common symptoms of the C1237 code in a Mercury?
Symptoms may include the ABS warning light being illuminated, loss of ABS functionality, and potential issues with traction control.
3. What causes the C1237 code to appear?
Common causes include a faulty rear wheel speed sensor, damaged wiring or connectors, debris obstructing the sensor, or a malfunctioning ABS module.
4. Can I still drive my Mercury with the C1237 code?
Yes, you can drive the vehicle, but ABS and traction control features may not function properly, increasing the risk of skidding or reduced braking performance in certain conditions.
5. How do I diagnose the C1237 code on my Mercury?
Diagnosis typically involves scanning for codes with an OBDII tool, visually inspecting the rear wheel speed sensor and wiring, and testing the sensor with a multimeter.
6. How do I fix the C1237 code on my Mercury?
Repairs may include replacing the faulty rear wheel speed sensor, repairing or replacing damaged wiring or connectors, and cleaning debris from the sensor and wheel hub.
7. How much does it cost to repair the C1237 code on a Mercury?
The cost can vary but typically ranges from $100 to $300, depending on whether the sensor, wiring, or ABS module needs repair or replacement.
8. Can a dirty wheel hub cause the C1237 code?
Yes, dirt, rust, or debris around the wheel hub can interfere with the rear wheel speed sensor’s ability to detect wheel movement, triggering the code.
9. How do I prevent the C1237 code from returning?
Regularly inspect and clean the wheel hubs, ensure the wheel speed sensors are free of damage, and address ABS-related issues promptly to prevent recurring problems.
10. Will clearing the C1237 code fix the problem?
Clearing the code will turn off the warning light temporarily, but if the underlying issue isn’t resolved, the code and symptoms will return.
Discuss the causes and fixes for C1237 Mercury OBDII Code
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