AutoCodes – GMC – C0161 2014 GMC Sierra

C0161 2014 GMC Sierra Code - Antilock Braking System Brake Switch Circuit

Quick Answer

When the brake pedal is applied, the Body Control Module (BCM) sends a serial data message to the Electronic Brake Control Module (EBCM) in reference to the brake pedal positions. Common causes include Faulty Brake Switch (Stop Lamp Switch), Brake Switch harness is open or shorted, Brake Switch 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: C0161 2014 GMC Sierra indicates Antilock Braking System Brake Switch Circuit.
Common causes: Common causes include Faulty Brake Switch (Stop Lamp Switch), Brake Switch harness is open or shorted, Brake Switch 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 530

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 20, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0161 2014 GMC Sierra Description

When the brake pedal is applied, the Body Control Module (BCM) sends a serial data message to the Electronic Brake Control Module (EBCM) in reference to the brake pedal positions. The Electronic Brake Control Module compares the correlation between the brake pedal position and the amount of brake pressure it senses from the brake pressure sensor, which is internal to the brake pressure modulator. It uses this information to control the vehicle during an electronic stability control event. The Diagnostic Trouble Code (DTC) will be set when the Electronic Brake Control Module detects the vehicle speed is greater than 16 km/h (10 MPH), the brake pedal is applied for 122 s, and the brake pressure is less than 620 kPa (90 psi).

OBDII Code C0161 2014 GMC Sierra - Antilock Braking System Brake Switch Circuit - AutoCodes.com — C0161 2014 GMC Sierra Code - Antilock Braking System Brake Switch Circuit

What does this mean?

What are the Possible Causes of the DTC C0161 2014 GMC Sierra?

Faulty Brake Switch (Stop Lamp Switch)
Brake Switch harness is open or shorted
Brake Switch circuit poor electrical connection
Faulty Electronic Brake Control Module (EBCM) with Brake Pressure Modulator Valve (BPMV)

How to Fix the DTC C0161 2014 GMC Sierra?

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 C0161 2014 GMC Sierra 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 C0161 2014 GMC Sierra code?

Need more information on how to fix the C0161 2014 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 C0161 2014 GMC Sierra Code

1. What are the common symptoms of OBDII code C0161 in a 2014 GMC Sierra?

The common symptoms of OBDII code C0161 in a 2014 GMC Sierra include the ABS light being illuminated on the dashboard, potential loss of traction control functionality, and possible issues with the vehicle's stability control system.

2. What does the OBDII code C0161 in a 2014 GMC Sierra indicate?

OBDII code C0161 in a 2014 GMC Sierra indicates a problem with the Antilock Braking System Brake Switch Circuit.

3. What are the possible causes of OBDII code C0161 in a 2014 GMC Sierra?

Possible causes of OBDII code C0161 in a 2014 GMC Sierra include a faulty brake switch, damaged wiring in the brake switch circuit, or issues with the ABS module.

4. How can I diagnose the OBDII code C0161 in my 2014 GMC Sierra?

Diagnosing OBDII code C0161 in a 2014 GMC Sierra involves checking the brake switch for proper operation, inspecting the wiring for any damage or corrosion, and using a diagnostic scanner to read and clear the trouble code.

5. Can I still drive my 2014 GMC Sierra with OBDII code C0161?

It is not recommended to drive your 2014 GMC Sierra with OBDII code C0161, as it may affect the proper operation of the Antilock Braking System and other safety features.

6. How can I repair OBDII code C0161 in my 2014 GMC Sierra?

To repair OBDII code C0161 in a 2014 GMC Sierra, you may need to replace the faulty brake switch, repair any damaged wiring, or have the ABS module checked and repaired by a qualified technician.

7. Will resetting the trouble code fix OBDII code C0161 in my 2014 GMC Sierra?

Resetting the trouble code may temporarily clear the warning light, but it will not fix the underlying issue causing OBDII code C0161 in a 2014 GMC Sierra. It is important to diagnose and repair the root cause of the problem.

8. How much does it typically cost to repair OBDII code C0161 in a 2014 GMC Sierra?

The cost to repair OBDII code C0161 in a 2014 GMC Sierra can vary depending on the specific cause of the issue, but it may range from $100 to $300 for parts and labor.

9. Can a DIY enthusiast repair OBDII code C0161 in a 2014 GMC Sierra?

While some DIY enthusiasts may be able to tackle the repair for OBDII code C0161 in a 2014 GMC Sierra, it is recommended to have a professional technician diagnose and fix the issue to ensure proper functioning of the Antilock Braking System.

10. How important is it to address OBDII code C0161 in a 2014 GMC Sierra promptly?

It is crucial to address OBDII code C0161 in a 2014 GMC Sierra promptly to ensure the safety and proper functioning of the vehicle's Antilock Braking System, traction control, and stability control features. Delaying repairs can lead to potential safety hazards on the road.