AutoCodes – Generic – C0249

C0249 Code - Left Normal Force Error

Quick Answer

The Electronic Brake Control Module (EBCM) receives invalid information from other modules through the General Motor Local Area Network (GMLAN) serial data bus. Common causes include This is an information code only, check other codes. 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: C0249 indicates Left Normal Force Error.
Common causes: Common causes include This is an information code only, check other codes.
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 2,637

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 Jun 04, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0249 Description

The Electronic Brake Control Module (EBCM) receives invalid information from other modules through the General Motor Local Area Network (GMLAN) serial data bus. The EBCM will set DTC based on this information. This Diagnostic Trouble Code (DTC) is for information only. As an aid to the technician, this DTC indicates that there are no problems in the ABS.

OBDII Code C0249 - Left Normal Force Error - AutoCodes.com — C0249 Code - Left Normal Force Error

What does this mean?

What are the Possible Causes of the DTC C0249?

This is an information code only, check other codes.

How to Fix the DTC C0249?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C0249 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 C0249 code?

Need more information on how to fix the C0249 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C0249 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C0249 Buick — Left Normal Force Error
C0249 Cadillac — Left Normal Force Error
C0249 Chevrolet — Left Normal Force Error
C0249 GMC — Left Normal Force Error
C0249 Hummer — Left Normal Force Error
C0249 Pontiac — Left Normal Force Error
C0249 Saturn — Left Normal Force Error

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 C0249 Code

1. What are the common symptoms of OBDII code C0249 (Left Normal Force Error)?

- Common symptoms include issues with the vehicle's traction control system, ABS system, and stability control system, as well as the illumination of the ABS warning light on the dashboard.

2. What can cause the OBDII code C0249 (Left Normal Force Error) to trigger?

- The code C0249 is typically triggered by a malfunction in the left front wheel speed sensor or an issue with the electronic brake control module (EBCM).

3. How can I diagnose the OBDII code C0249 (Left Normal Force Error)?

- Diagnosis usually involves using a professional OBDII scanner to read the code, checking the left front wheel speed sensor for any damage or malfunction, and inspecting the EBCM for faults.

4. What are some possible repair tips for resolving OBDII code C0249 (Left Normal Force Error)?

- Repair tips may include replacing the left front wheel speed sensor, repairing any damaged wiring or connections related to the sensor, or reprogramming the EBCM to resolve the error.

5. Can driving with the OBDII code C0249 (Left Normal Force Error) cause further damage to the vehicle?

- Continuing to drive with this code may affect the vehicle's ABS and traction control systems, potentially compromising safety and stability while driving.

6. How much does it typically cost to repair OBDII code C0249 (Left Normal Force Error)?

- The cost of repair can vary depending on the specific cause of the issue, but it may involve parts replacement, sensor reprogramming, or wiring repairs, potentially ranging from $100 to $500 or more.

7. Is it safe to continue driving my vehicle if the OBDII code C0249 (Left Normal Force Error) appears intermittently?

- It is not recommended to drive the vehicle if the ABS warning light is on, as the issue may impact the vehicle's braking and stability control systems.

8. Can I reset the OBDII code C0249 (Left Normal Force Error) on my own?

- While you can attempt to clear the code with an OBDII scanner, it is crucial to diagnose and address the underlying issue causing the error code to prevent it from reoccurring.

9. How long does it usually take to repair OBDII code C0249 (Left Normal Force Error)?

- The repair time can vary based on the specific cause of the issue, but it may take a few hours to a day to diagnose and address the problem effectively.

10. Can a DIY enthusiast with basic automotive knowledge fix OBDII code C0249 (Left Normal Force Error)?

- Depending on the exact cause, a DIY enthusiast may be able to address the issue by replacing the left front wheel speed sensor or checking and repairing any wiring faults, but it is recommended to seek professional help for more complex repairs involving the EBCM.