AutoCodesChevrolet – C1254 2018 Chevrolet Silverado

C1254 2018 Chevrolet Silverado Code - Longitudinal 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
C1254 2018 Chevrolet Silverado indicates Longitudinal 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.
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Code Popularity 261
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 C1254 2018 Chevrolet Silverado 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 C1254 2018 Chevrolet Silverado - Longitudinal Acceleration Sensor Performance - AutoCodes.com
C1254 2018 Chevrolet Silverado Code - Longitudinal Acceleration Sensor Performance

What are the Possible Causes of the DTC C1254 2018 Chevrolet Silverado?

  • 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 C1254 2018 Chevrolet Silverado?

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 C1254 2018 Chevrolet Silverado 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 C1254 2018 Chevrolet Silverado code?

Need more information on how to fix the C1254 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 C1254 2018 Chevrolet Silverado Code

1. What are common symptoms of OBDII code C1254 in a 2018 Chevrolet Silverado?

The common symptoms of OBDII code C1254 in a 2018 Chevrolet Silverado include the traction control and stability control warning lights coming on, decreased vehicle stability, and potential issues with the vehicle's overall handling.

2. What does the OBDII code C1254 on a 2018 Chevrolet Silverado indicate?

OBDII code C1254 on a 2018 Chevrolet Silverado indicates a fault with the Longitudinal Acceleration Sensor, specifically relating to its performance.

3. What are possible causes of OBDII code C1254 in a 2018 Chevrolet Silverado?

Possible causes of OBDII code C1254 in a 2018 Chevrolet Silverado include a faulty Longitudinal Acceleration Sensor, damaged wiring or connectors related to the sensor, or issues with the sensor's calibration.

4. How can I diagnose the Longitudinal Acceleration Sensor for OBDII code C1254 in my 2018 Chevrolet Silverado?

To diagnose the Longitudinal Acceleration Sensor for OBDII code C1254 in a 2018 Chevrolet Silverado, you can use a diagnostic scanner to retrieve the fault code, visually inspect the sensor and its connections, and perform a sensor calibration if necessary.

5. Is it safe to continue driving my 2018 Chevrolet Silverado with OBDII code C1254 active?

It is not recommended to continue driving your 2018 Chevrolet Silverado with OBDII code C1254 active, as it could lead to potential safety issues due to compromised stability and traction control systems.

6. Can I reset the OBDII code C1254 in my 2018 Chevrolet Silverado by disconnecting the battery?

While disconnecting the battery may temporarily clear the OBDII code C1254 in your 2018 Chevrolet Silverado, it is important to address the underlying issue with the Longitudinal Acceleration Sensor to prevent the code from reoccurring.

7. How much does it typically cost to repair OBDII code C1254 in a 2018 Chevrolet Silverado?

The cost of repairing OBDII code C1254 in a 2018 Chevrolet Silverado can vary depending on the specific issue with the Longitudinal Acceleration Sensor, but it may range from $200 to $500 including parts and labor.

8. Can a DIY enthusiast replace the Longitudinal Acceleration Sensor to resolve OBDII code C1254 in a 2018 Chevrolet Silverado?

Replacing the Longitudinal Acceleration Sensor to resolve OBDII code C1254 in a 2018 Chevrolet Silverado may be possible for experienced DIY enthusiasts with the necessary tools and knowledge. However, it is recommended to consult a professional mechanic for proper diagnosis and repair.

9. Will OBDII code C1254 cause my 2018 Chevrolet Silverado to fail a state emissions inspection?

OBDII code C1254 alone may not cause your 2018 Chevrolet Silverado to fail a state emissions inspection, but it is important to address the underlying issue to ensure the vehicle's stability and safety systems are functioning properly.

10. How often should the Longitudinal Acceleration Sensor be inspected in a 2018 Chevrolet Silverado to prevent OBDII code C1254 from occurring?

It is recommended to include the Longitudinal Acceleration Sensor in regular maintenance checks for a 2018 Chevrolet Silverado to prevent issues that could trigger OBDII code C1254. Inspecting the sensor during routine service intervals or when related symptoms occur can help maintain optimal vehicle performance.

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