AutoCodes – Cadillac – C1254 Cadillac

C1254 Cadillac 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 Cadillac 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,804

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code C1254 Cadillac 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 Cadillac - Longitudinal Acceleration Sensor Performance - AutoCodes.com — C1254 Cadillac Code - Longitudinal Acceleration Sensor Performance

What does this mean?

What are the Possible Causes of the DTC C1254 Cadillac?

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 Cadillac?

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 Cadillac 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 Cadillac code?

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

Need Help with the Code?

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

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 Cadillac Code

What does the OBDII code C1254 mean for my Cadillac?

C1254 indicates a problem with the longitudinal acceleration sensor performance, which measures the vehicle's acceleration forces.

What symptoms might I experience if my Cadillac has a C1254 code?

Common symptoms include a warning light on the dashboard, reduced traction control performance, and potential issues with stability control.

What could cause the C1254 code to trigger?

Causes may include a faulty longitudinal acceleration sensor, wiring issues, bad connections, or problems within the vehicle's electronic stability control system.

How can I diagnose the C1254 code?

Start by using an OBDII scanner to confirm the code, then inspect the longitudinal acceleration sensor, wiring, and connectors for damage or corrosion.

What are some common repairs for a C1254 code?

Repairs may include replacing the longitudinal acceleration sensor, repairing damaged wiring, or cleaning corroded connections.

Can I drive my Cadillac with a C1254 code?

While it may be possible, driving with this code can impair traction and stability control, potentially compromising safety, so it's advisable to have it checked.

How much does it typically cost to repair a C1254 code?

Repair costs can vary widely, but replacing the sensor might range from $100 to $300 depending on labor and parts.

Is a C1254 code serious?

Yes, it can affect vehicle stability and traction control, so it should be addressed promptly to ensure safe driving conditions.

Will clearing the C1254 code fix the problem?

Clearing the code may temporarily turn off the warning light, but the underlying issue will still need to be diagnosed and repaired for a permanent fix.