AutoCodesBuick – C1207 Buick

C1207 Buick Code - Left Rear Wheel Speed Sensor Circuit Range Performance

Quick Answer

As the wheel is rotated, the speed sensor produces an AC voltage that increases with wheel speed. Common causes include Faulty Left Rear Wheel Speed Sensor, Left Rear Wheel Speed Sensor harness is open or shorted, Left Rear Wheel Speed 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
C1207 Buick indicates Left Rear Wheel Speed Sensor Circuit Range Performance.
Common causes
Common causes include Faulty Left Rear Wheel Speed Sensor, Left Rear Wheel Speed Sensor harness is open or shorted, Left Rear Wheel Speed 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 262
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Nov 19, 2023
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Code C1207 Buick Description

As the wheel is rotated, the speed sensor produces an AC voltage that increases with wheel speed. The Electronic Brake Control Module (EBCM) uses the frequency of the AC signal to calculate the wheel speed. The speed sensor is connected to the EBCM by a twisted pair of wires. Twisting reduces noise susceptibility that may cause a Diagnostic Trouble Code (DTC) to be set. The DTC will be set when the left rear wheel speed is accelerating or decelerating beyond reasonable limits.
OBDII Code C1207 Buick - Left Rear Wheel Speed Sensor Circuit Range Performance - AutoCodes.com
C1207 Buick Code - Left Rear Wheel Speed Sensor Circuit Range Performance

What are the Possible Causes of the DTC C1207 Buick?

  • Faulty Left Rear Wheel Speed Sensor
  • Left Rear Wheel Speed Sensor harness is open or shorted
  • Left Rear Wheel Speed Sensor circuit poor electrical connection
  • Faulty Electronic Brake Control Module (EBCM)

How to Fix the DTC C1207 Buick?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1207 Buick 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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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 C1207 Buick Code

1. What does the OBDII code C1207 mean on a Buick?

C1207 indicates a problem with the left rear wheel speed sensor circuit, specifically related to its range or performance.

2. What are common symptoms of code C1207 in a Buick?

Symptoms may include an ABS warning light, traction control issues, erratic speedometer readings, or difficulty maintaining stability during braking.

3. What causes the C1207 code to appear?

The most common causes include a faulty left rear wheel speed sensor, damaged wiring or connectors, debris on the sensor, or a malfunctioning ABS module.

4. How do I diagnose the C1207 code on my Buick?

Start by inspecting the left rear wheel speed sensor and its wiring for damage or corrosion. Use a multimeter to check the sensor's resistance and verify circuit continuity.

5. Can I drive my Buick with a C1207 code?

While the vehicle may still be drivable, ABS and traction control systems may not function properly, increasing the risk of unsafe driving conditions.

6. How do I fix the C1207 code on a Buick?

Repairs may involve cleaning or replacing the left rear wheel speed sensor, repairing damaged wiring, or replacing the ABS module if necessary.

7. How much does it cost to repair a C1207 code?

Replacing a wheel speed sensor typically costs $100–$300, while repairing wiring or replacing the ABS module could be more expensive depending on labor costs.

8. Can a dirty wheel hub cause the C1207 code?

Yes, debris or buildup around the wheel hub or sensor can interfere with the sensor's performance, leading to this code.

9. Will clearing the C1207 code fix the problem?

Simply clearing the code without addressing the underlying issue will not resolve the problem, and the code is likely to return.

10. How can I prevent the C1207 code from reoccurring?

Regularly inspect and clean wheel speed sensors, check for damaged wiring, and ensure proper maintenance of the ABS system.

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