AutoCodes – Chevrolet – C0161 2018 Chevrolet Silverado

C0161 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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 350

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado - Antilock Braking System Brake Switch Circuit - AutoCodes.com — C0161 2018 Chevrolet Silverado Code - Antilock Braking System Brake Switch Circuit

What does this mean?

What are the Possible Causes of the DTC C0161 2018 Chevrolet Silverado?

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 2018 Chevrolet Silverado?

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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado code?

Need more information on how to fix the C0161 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado Code

1. What does OBDII code C0161 on a 2018 Chevrolet Silverado mean?

The code C0161 indicates a problem with the Antilock Braking System (ABS) Brake Switch Circuit on a 2018 Chevrolet Silverado.

2. What are the common symptoms associated with OBDII code C0161?

Common symptoms of OBDII code C0161 may include the ABS warning light illuminating on the dashboard, issues with the ABS system functionality, and potential traction control problems.

3. What are the possible causes of OBDII code C0161 on a 2018 Chevrolet Silverado?

Potential causes of code C0161 on a 2018 Chevrolet Silverado include a faulty brake switch, damaged wiring in the brake switch circuit, or a malfunctioning ABS module.

4. How can I diagnose the issue related to OBDII code C0161 on my 2018 Chevrolet Silverado?

Diagnosing OBDII code C0161 may involve using a diagnostic scanner to retrieve the code, inspecting the brake switch and its wiring for damage, and testing the ABS module for proper functionality.

5. Can I continue driving my 2018 Chevrolet Silverado with OBDII code C0161?

It is not recommended to continue driving your Chevrolet Silverado with code C0161 present, as it could affect the performance of the ABS system and compromise your vehicle's safety.

6. How can I repair OBDII code C0161 on my 2018 Chevrolet Silverado?

Repairing OBDII code C0161 may involve replacing the faulty brake switch, repairing any damaged wiring in the circuit, or in some cases, replacing the ABS module.

7. Are there any DIY tips for addressing OBDII code C0161 on a 2018 Chevrolet Silverado?

While diagnosing and repairing OBDII code C0161 may require advanced automotive knowledge and specialized tools, checking the brake switch for proper operation and inspecting related wiring can be initial DIY steps.

8. How much does it cost to fix OBDII code C0161 on a 2018 Chevrolet Silverado?

The cost of fixing OBDII code C0161 on a 2018 Chevrolet Silverado can vary depending on the specific cause of the issue, but it may involve parts and labor expenses ranging from $100 to $500 or more.

9. Can weather conditions affect the appearance of OBDII code C0161 on a 2018 Chevrolet Silverado?

Extreme weather conditions, such as excessive heat or moisture, can potentially impact the brake switch circuit and trigger OBDII code C0161 on a 2018 Chevrolet Silverado.

10. How often should I have my 2018 Chevrolet Silverado's ABS system inspected to prevent issues like OBDII code C0161?

Regular maintenance schedules, including periodic inspections of the ABS system components, are recommended to help prevent issues like OBDII code C0161 on a 2018 Chevrolet Silverado.