AutoCodesChevrolet – C1254 2014 Chevrolet Silverado

C1254 2014 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 2014 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 224
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 2014 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 2014 Chevrolet Silverado - Longitudinal Acceleration Sensor Performance - AutoCodes.com
C1254 2014 Chevrolet Silverado Code - Longitudinal Acceleration Sensor Performance

What are the Possible Causes of the DTC C1254 2014 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 2014 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 2014 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 2014 Chevrolet Silverado code?

Need more information on how to fix the C1254 2014 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 2014 Chevrolet Silverado Code

What does the OBDII code C1254 mean for a 2014 Chevrolet Silverado?

C1254 indicates a problem with the longitudinal acceleration sensor's performance, which plays a key role in stability control and braking systems.

What are the common symptoms of the C1254 code in a 2014 Silverado?

Symptoms may include ABS or traction control warning lights, reduced stability control performance, or erratic braking behavior.

What causes the C1254 code to appear in a 2014 Chevrolet Silverado?

Common causes include a faulty longitudinal acceleration sensor, wiring issues, poor electrical connections, or problems with the ABS module.

Can a faulty longitudinal acceleration sensor affect driving safety?

Yes, it can compromise the vehicle's traction control and stability systems, potentially impacting braking and handling in certain conditions.

How do you diagnose the C1254 code in a 2014 Chevrolet Silverado?

A technician will use a diagnostic scanner to read the code, examine sensor data, inspect wiring and connections, and test the sensor for proper operation.

Can the C1254 code trigger other warning lights in the Silverado?

Yes, it may cause the ABS or traction control warning lights to illuminate on the dashboard.

How can the C1254 code be repaired in a 2014 Chevrolet Silverado?

Repairs may involve replacing the longitudinal acceleration sensor, fixing damaged wiring, or addressing issues with the ABS module.

Is it safe to drive with the C1254 code active on a 2014 Silverado?

Driving may be possible, but it's not recommended as stability control and braking systems may not function correctly, especially in challenging road conditions.

How much does it cost to fix the C1254 code in a Chevrolet Silverado?

Repair costs vary but typically range from $150 to $400, depending on whether the sensor or related components need replacement.

Can regular maintenance prevent the C1254 code from appearing?

Routine checks of the ABS system, wiring connections, and sensors can help prevent issues related to this code.

Discuss the causes and fixes for C1254 2014 Chevrolet Silverado OBDII Code

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