AutoCodes – Chevrolet – C1254 Chevrolet

C1254 Chevrolet 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 Chevrolet 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 7,162

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 19, 2023

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code C1254 Chevrolet 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 Chevrolet - Longitudinal Acceleration Sensor Performance - AutoCodes.com — C1254 Chevrolet Code - Longitudinal Acceleration Sensor Performance

What does this mean?

What are the Possible Causes of the DTC C1254 Chevrolet?

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 Chevrolet?

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

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1254 Chevrolet 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 Chevrolet code?

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

Need Help with the Code?

Get the C1254 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

C1254 2014 Chevrolet Silverado — Longitudinal Acceleration Sensor Performance
C1254 2015 Chevrolet Silverado — Longitudinal Acceleration Sensor Performance
C1254 2016 Chevrolet Silverado — Longitudinal Acceleration Sensor Performance
C1254 2017 Chevrolet Silverado — Longitudinal Acceleration Sensor Performance
C1254 2018 Chevrolet Silverado — Longitudinal Acceleration Sensor Performance

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 Chevrolet Code

1. What are common symptoms of OBDII code C1254 in a Chevrolet related to the Longitudinal Acceleration Sensor Performance?

- Common symptoms include the traction control light illuminating on the dashboard, erratic braking behavior, and potential stability control issues.

2. What are possible causes of OBDII code C1254 in a Chevrolet indicating Longitudinal Acceleration Sensor Performance issues?

- Possible causes may include a faulty longitudinal acceleration sensor, damaged wiring or connectors, or issues with the sensor calibration.

3. How can I diagnose the Longitudinal Acceleration Sensor Performance issue associated with OBDII code C1254 in a Chevrolet?

- Diagnosis typically involves using a diagnostic scanner to retrieve the trouble codes, testing the longitudinal acceleration sensor for proper functionality, and inspecting the wiring for any damage.

4. Can I still drive my Chevrolet with OBDII code C1254 related to Longitudinal Acceleration Sensor Performance?

- It is recommended to address the issue promptly to ensure the vehicle's safety systems are functioning correctly. Continued driving with this issue may lead to stability and traction control concerns.

5. What are some repair tips for resolving OBDII code C1254 in a Chevrolet due to Longitudinal Acceleration Sensor Performance problems?

- Repair tips may include checking and repairing any damaged wiring, replacing the faulty longitudinal acceleration sensor, and performing a sensor calibration or reset if necessary.

6. Is it possible to reset the OBDII code C1254 related to Longitudinal Acceleration Sensor Performance in a Chevrolet without fixing the underlying issue?

- While clearing the code may temporarily turn off the warning light, it is crucial to address the root cause to ensure the safety systems operate correctly and prevent potential future problems.

7. How much does it typically cost to repair OBDII code C1254 associated with Longitudinal Acceleration Sensor Performance in a Chevrolet?

- Repair costs can vary depending on the specific issue, but they may include sensor replacement, wiring repairs, and labor fees. It's recommended to consult a professional for an accurate estimate.

8. Can extreme weather conditions or rough driving cause OBDII code C1254 to trigger in a Chevrolet due to Longitudinal Acceleration Sensor Performance issues?

- Extreme weather conditions or rough driving could potentially lead to sensor damage or disruption, resulting in the triggering of OBDII code C1254 related to Longitudinal Acceleration Sensor Performance.

9. Are there any recalls or technical service bulletins related to OBDII code C1254 in Chevrolet vehicles regarding Longitudinal Acceleration Sensor Performance?

- It's advisable to check with Chevrolet or a trusted automotive service center for any relevant recalls or technical service bulletins addressing Longitudinal Acceleration Sensor Performance issues associated with OBDII code C1254.

10. How important is it to address OBDII code C1254 in a Chevrolet linked to Longitudinal Acceleration Sensor Performance promptly?

- It is crucial to address the issue promptly to ensure the proper functioning of safety systems like traction control and stability control, as unresolved issues could compromise vehicle safety.