AutoCodesBuick – C1251 Buick

C1251 Buick Code - Lateral Acceleration Sensor Performance

Quick Answer

The Yaw Rate, Lateral Acceleration, and Longitudinal Acceleration Sensors are combined into one Multi-Axis Acceleration Sensor, internal to the Inflatable Restraint Sensing and Diagnostic Module. Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control Module 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
C1251 Buick indicates Lateral Acceleration Sensor Performance.
Common causes
Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control Module 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 1,315
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 19, 2023
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Code C1251 Buick Description

The Yaw Rate, Lateral Acceleration, and Longitudinal Acceleration Sensors are combined into one Multi-Axis Acceleration Sensor, internal to the Inflatable Restraint Sensing and Diagnostic Module. The Multi-Axis Acceleration Sensor communicates with the Electronic Brake Control Module (EBCM) and Transmission Control Module (TCM) via serial data. The Electronic Brake Control Module activates the stability control function depending on the Multi-Axis Acceleration Sensor input. The Inflatable Restraint Sensing and Diagnostic Module uses the Multi-Axis Acceleration Sensor to determine if the vehicle is in a rollover or near collision incident. The Transmission Control Module sets this Diagnostic Trouble Code (DTC)s. The DTC will be set when the Transmission Control Module detects a fault that prevents it from performing a hill hold function.
OBDII Code C1251 Buick - Lateral Acceleration Sensor Performance - AutoCodes.com
C1251 Buick Code - Lateral Acceleration Sensor Performance

What are the Possible Causes of the DTC C1251 Buick?

  • Faulty Transmission Control Module (TCM)
  • Transmission Control Module harness is open or shorted
  • Transmission Control Module circuit poor electrical connection
  • Faulty Electronic Brake Control Module (EBCM)

How to Fix the DTC C1251 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1251 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.

Need more information about the C1251 Buick code?

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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 C1251 Buick Code

1. What are the common symptoms of OBDII code C1251 Buick (Lateral Acceleration Sensor Performance)?

- Common symptoms include the ABS warning light staying on, stability control system malfunctions, and erratic steering behavior.

2. What causes OBDII code C1251 Buick to trigger?

- This code is typically triggered by a malfunction in the lateral acceleration sensor, also known as the yaw rate sensor.

3. How can I diagnose the issue related to OBDII code C1251 Buick?

- Diagnosis involves checking the lateral acceleration sensor for proper operation, inspecting wiring and connections for damage, and scanning the vehicle's ABS system for related fault codes.

4. Is it safe to drive with OBDII code C1251 Buick active?

- It is not recommended to drive with this code active, as it can affect the performance of the vehicle's stability control system and compromise safety.

5. Can I reset OBDII code C1251 Buick myself?

- While you can clear the code with an OBDII scanner, it is important to address the underlying issue causing the code to prevent it from reoccurring.

6. What are some common repair tips for resolving OBDII code C1251 Buick?

- Repair tips may include replacing the lateral acceleration sensor, repairing damaged wiring or connections, and ensuring proper calibration of the sensor.

7. How much does it typically cost to repair OBDII code C1251 Buick?

- The cost of repair can vary depending on the specific issue, but it may range from $200 to $500 for parts and labor.

8. Can a DIY enthusiast fix OBDII code C1251 Buick at home?

- While some aspects of the repair may be possible for experienced DIY enthusiasts, diagnosing and repairing issues related to the lateral acceleration sensor may require professional expertise.

9. Are there any recalls or technical service bulletins related to OBDII code C1251 Buick?

- It is recommended to check with Buick dealerships or online databases for any recalls or technical service bulletins related to this specific OBDII code.

10. How can I prevent OBDII code C1251 Buick from occurring in the future?

- Regular maintenance, including checking the condition of the lateral acceleration sensor and related components, can help prevent this code from reoccurring.

Discuss the causes and fixes for C1251 Buick OBDII Code

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