AutoCodes – GMC – C1273 GMC

C1273 GMC Code - Right Front TCS Master Cylinder Isolation Valve Malfunction

Quick Answer

The system relay is energized when the ignition is ON. Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module (EBCM) harness is open or shorted, Electronic Brake Control Module (EBCM) 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: C1273 GMC indicates Right Front TCS Master Cylinder Isolation Valve Malfunction.
Common causes: Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module (EBCM) harness is open or shorted, Electronic Brake Control Module (EBCM) 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 1,193

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 Sep 02, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1273 GMC Description

The system relay is energized when the ignition is ON. The system relay supplies voltage to the valve solenoids and the pump motor. This voltage is referred to as the system voltage. The Electronic Brake Control Module (EBCM) microprocessor activates the valve solenoids by grounding the control circuit. The Solenoid Valve circuit is internal to the EBCM. The EBCM sets the OBDII code when the commanded state of the driver and the actual state of the control circuit do not match.

OBDII Code C1273 GMC - Right Front TCS Master Cylinder Isolation Valve Malfunction - AutoCodes.com — C1273 GMC Code - Right Front TCS Master Cylinder Isolation Valve Malfunction

What does this mean?

What are the Possible Causes of the DTC C1273 GMC?

Faulty Electronic Brake Control Module (EBCM)
Electronic Brake Control Module (EBCM) harness is open or shorted
Electronic Brake Control Module (EBCM) circuit poor electrical connection

How to Fix the DTC C1273 GMC?

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 C1273 GMC 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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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 C1273 GMC Code

1. What are common symptoms of OBDII code C1273 GMC (Right Front TCS Master Cylinder Isolation Valve Malfunction)?

- Common symptoms include the traction control system (TCS) warning light illuminating on the dashboard, poor braking performance, and potential issues with the vehicle's stability control.

2. What can cause the OBDII code C1273 GMC to trigger?

- The code C1273 GMC is typically triggered by a malfunction in the right front TCS master cylinder isolation valve, which can be caused by electrical faults, wiring issues, or component failure.

3. How serious is the Right Front TCS Master Cylinder Isolation Valve Malfunction?

- This issue can affect the vehicle's traction control and stability control systems, potentially compromising the vehicle's safety and handling. It is important to address this issue promptly.

4. Can I continue driving my vehicle with the C1273 GMC code present?

- It is not recommended to drive the vehicle with the C1273 GMC code present, as it can impact the performance of the traction control system and compromise safety.

5. How can I diagnose and repair the Right Front TCS Master Cylinder Isolation Valve Malfunction?

- Diagnosing and repairing this issue typically involves checking the wiring and connections related to the right front TCS master cylinder isolation valve, testing the valve for proper function, and replacing any faulty components as needed.

6. Is it possible to reset the OBDII code C1273 GMC without fixing the underlying issue?

- While clearing the code may temporarily turn off the warning light, the underlying issue causing the code will persist until properly diagnosed and repaired.

7. Can a DIY enthusiast fix the Right Front TCS Master Cylinder Isolation Valve Malfunction?

- Depending on your mechanical skills and access to tools, it may be possible to address this issue yourself. However, diagnosing and repairing electrical or brake system components can be complex, so professional assistance is recommended.

8. How much does it cost to repair the Right Front TCS Master Cylinder Isolation Valve Malfunction?

- The cost of repairing the right front TCS master cylinder isolation valve malfunction can vary depending on the extent of the issue, the labor rates of the repair shop, and the cost of any replacement parts needed.

9. Will fixing the Right Front TCS Master Cylinder Isolation Valve Malfunction improve vehicle performance?

- Yes, resolving the issue causing the C1273 GMC code can help restore proper traction control system operation, improve braking performance, and enhance overall vehicle safety and handling.

10. How can regular maintenance help prevent OBDII code C1273 GMC from occurring?

- Regular maintenance, including brake system inspections, electrical system checks, and timely repairs of any warning lights or issues, can help prevent issues like the Right Front TCS Master Cylinder Isolation Valve Malfunction from occurring.