AutoCodes – Ford – C1237 Ford

C1237 Ford 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 Ford 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.

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Code Popularity 38,440

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 02, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code C1237 Ford Description

The Anti-Lock Brake System (ABS) Actuator And Electric Unit (Control Unit) monitors the Rear Anti-Lock Brake Sensor. The ABS Actuator And Electric Unit sets the OBDII code when the Rear Anti-Lock Brake Sensor is not to factory specifications.

OBDII Code C1237 Ford - Speed Wheel Rear Input Signal Missing - AutoCodes.com — C1237 Ford Code - Speed Wheel Rear Input Signal Missing

What does this mean?

What are the Possible Causes of the DTC C1237 Ford?

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 Ford?

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 does this mean?

Code Tech Notes

There is a Factory Service Bulletin for the 2002-2004 Ford Explorer:
2002-2004 Ford Explorer Factory Service Bulletin OBDII Code C1237

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1237 Ford 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.

Need more information about the C1237 Ford code?

Need more information on how to fix the C1237 Ford code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1237 Ford code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C1237 Ford Code

1. What are the common symptoms of OBDII code C1237 Ford (Speed Wheel Rear Input Signal Missing)?

- Common symptoms include the ABS light illuminating on the dashboard, traction control system malfunction, and potential loss of stability control.

2. What are the possible causes of OBDII code C1237 Ford (Speed Wheel Rear Input Signal Missing)?

- The code can be triggered by a faulty rear wheel speed sensor, damaged wiring or connectors, sensor alignment issues, or internal module faults.

3. How can I diagnose the OBDII code C1237 Ford (Speed Wheel Rear Input Signal Missing)?

- Diagnosis involves scanning the ABS module for trouble codes, conducting a visual inspection of wiring and connectors, testing the rear wheel speed sensor, and verifying sensor alignment.

4. Can I continue driving with OBDII code C1237 Ford (Speed Wheel Rear Input Signal Missing) present?

- It is not recommended to continue driving with this code present, as it can affect the vehicle's stability control and ABS functionality.

5. How can I repair OBDII code C1237 Ford (Speed Wheel Rear Input Signal Missing)?

- Repair options include replacing the faulty rear wheel speed sensor, repairing damaged wiring or connectors, adjusting sensor alignment, or addressing internal module issues.

6. Are there any DIY tips for addressing OBDII code C1237 Ford (Speed Wheel Rear Input Signal Missing)?

- DIY enthusiasts can start by checking wiring connections, cleaning sensor connectors, and ensuring proper sensor alignment before considering sensor replacement.

7. How much does it typically cost to repair OBDII code C1237 Ford (Speed Wheel Rear Input Signal Missing)?

- The cost of repair can vary depending on the root cause, but it may range from $100 to $300 for parts and labor, excluding diagnostic fees.

8. Can extreme weather conditions trigger OBDII code C1237 Ford (Speed Wheel Rear Input Signal Missing)?

- Yes, extreme weather conditions such as heavy rain or snow can potentially affect the rear wheel speed sensor's performance and trigger the code.

9. Will resetting the trouble codes clear OBDII code C1237 Ford (Speed Wheel Rear Input Signal Missing)?

- Resetting the trouble codes may temporarily clear the code, but it is important to diagnose and address the underlying issue to prevent it from reoccurring.

10. Is it necessary to recalibrate the ABS system after repairing OBDII code C1237 Ford (Speed Wheel Rear Input Signal Missing)?

- It is recommended to perform an ABS system calibration or reset procedure after repairing the issue to ensure proper functionality and accurate sensor readings.