AutoCodes – Generic – C0276

C0276 Code - Transmission Control Module Traction Control Not Allowed

Quick Answer

The Electronic Brake Control Module (EBCM) may inhibit the Traction Control System (TCS) if a failure occurs with the locking differential or the transfer case. Common causes include Check Transfercase Control Module (TCCM) for 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: C0276 indicates Transmission Control Module Traction Control Not Allowed.
Common causes: Common causes include Check Transfercase Control Module (TCCM) for 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 11,180

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 06, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0276 Description

The Electronic Brake Control Module (EBCM) may inhibit the Traction Control System (TCS) if a failure occurs with the locking differential or the transfer case. The transfer case selected range has been reported as invalid by the Transfercase Control Module (TCCM).

OBDII Code C0276 - Transmission Control Module Traction Control Not Allowed - AutoCodes.com — C0276 Code - Transmission Control Module Traction Control Not Allowed

What does this mean?

What are the Possible Causes of the DTC C0276?

Check Transfercase Control Module (TCCM) for codes.

How to Fix the DTC C0276?

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 C0276 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.

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Need Help with the Code?

Get the C0276 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C0276 Buick — Transmission Control Module Traction Control Not Allowed
C0276 Cadillac — Transmission Control Module Traction Control Not Allowed
C0276 Chevrolet — Transmission Control Module Traction Control Not Allowed
C0276 GMC — Transmission Control Module Traction Control Not Allowed
C0276 Hummer — Transmission Control Module Traction Control Not Allowed

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 C0276 Code

1. What are the common symptoms of OBDII code C0276 - Transmission Control Module Traction Control Not Allowed?

The common symptoms include the traction control system being disabled, illuminated traction control warning light on the dashboard, and potential loss of traction control functionality.

2. What are the possible causes of OBDII code C0276?

Possible causes of this code include a faulty transmission control module (TCM), wiring issues in the TCM circuit, damaged wheel speed sensors, or a malfunctioning traction control system.

3. How can I diagnose the OBDII code C0276?

Diagnosing this code typically involves using a scan tool to retrieve the code, checking for any other related codes, inspecting the TCM and wheel speed sensor connections, and conducting a system test to determine the root cause.

4. Is it safe to drive with OBDII code C0276 present?

It is not recommended to drive with this code present, as it can affect the operation of the traction control system, potentially compromising vehicle stability and safety.

5. How can I repair OBDII code C0276 - Transmission Control Module Traction Control Not Allowed?

Repairing this code may involve addressing the specific underlying cause, such as replacing a faulty TCM, repairing damaged wiring, or fixing wheel speed sensor issues. It is advisable to consult a professional mechanic for proper diagnosis and repair.

6. Can a DIY enthusiast fix OBDII code C0276 at home?

While some DIY enthusiasts may be able to diagnose basic issues related to this code, repairing it often requires specialized tools and expertise. It is recommended to seek help from a qualified mechanic for proper diagnosis and repair.

7. How much does it cost to repair OBDII code C0276?

The cost of repairing this code can vary depending on the specific cause, the extent of the repairs needed, and labor rates in your area. It is best to obtain estimates from local repair shops or dealerships.

8. Will resetting the trouble codes clear OBDII code C0276?

Resetting the trouble codes may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear. It is important to diagnose and repair the root cause of the code to prevent it from coming back.

9. Can OBDII code C0276 affect other vehicle systems?

Yes, this code can potentially impact other vehicle systems, especially those related to traction control and transmission operation. It is essential to address this code promptly to avoid further complications.

10. How can I prevent OBDII code C0276 from recurring in the future?

Regular maintenance, such as checking and replacing worn components, ensuring proper wiring connections, and addressing any warning signs promptly, can help prevent the recurrence of this code.