AutoCodes – Generic – C0116

C0116 Code - Stop Light Switch Circuit Malfunction

Quick Answer

The Anti-Lock Brake System (ABS) Module monitors the Stop Light Switch. Common causes include Faulty Stop Light Switch (Brake Light Switch), Stop Light Switch harness is open or shorted, Stop Light 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: C0116 indicates Stop Light Switch Circuit Malfunction.
Common causes: Common causes include Faulty Stop Light Switch (Brake Light Switch), Stop Light Switch harness is open or shorted, Stop Light 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 3,194

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 May 06, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0116 Description

The Anti-Lock Brake System (ABS) Module monitors the Stop Light Switch. The ABS Module sets the OBDII code when the Stop Light Switch is not to factory specifications.

OBDII Code C0116 - Stop Light Switch Circuit Malfunction - AutoCodes.com — C0116 Code - Stop Light Switch Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC C0116?

Faulty Stop Light Switch (Brake Light Switch)
Stop Light Switch harness is open or shorted
Stop Light Switch circuit poor electrical connection

How to Fix the DTC C0116?

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 C0116 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 C0116 code?

Need more information on how to fix the C0116 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C0116 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C0116 Subaru — Stop Light Switch Circuit Malfunction

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 C0116 Code

1. What are the common symptoms of OBDII code C0116, Stop Light Switch Circuit Malfunction?

Common symptoms include the brake lights staying on or not working properly, the vehicle's cruise control not engaging, and the inability to shift out of park.

2. What are the potential causes of the C0116 OBDII code?

Possible causes of this code include a faulty stop light switch, damaged wiring or connectors in the circuit, a blown fuse, or a problem with the brake light relay.

3. How can I diagnose the Stop Light Switch Circuit Malfunction code?

You can diagnose this code by visually inspecting the stop light switch and its wiring, checking the fuse related to the brake lights, and using an OBDII scanner to read the code and monitor the switch's operation.

4. Can I drive my vehicle with the C0116 code present?

It is not recommended to drive with the C0116 code active, as it may affect the proper functioning of your brake lights and other safety features.

5. How can I repair the Stop Light Switch Circuit Malfunction code?

To repair this code, you may need to replace the faulty stop light switch, repair or replace damaged wiring or connectors, check and replace any blown fuses, or address any issues with the brake light relay.

6. Will resetting the OBDII code C0116 fix the issue?

Resetting the code may temporarily clear the warning light, but it will not fix the underlying issue causing the Stop Light Switch Circuit Malfunction.

7. How much does it cost to repair the C0116 OBDII code?

The cost of repairing this code can vary depending on the specific issue causing it, but it may range from a simple DIY fix to a more involved repair at a mechanic or dealership.

8. Can a malfunctioning stop light switch cause other problems in my vehicle?

Yes, a malfunctioning stop light switch can affect the operation of other systems like the cruise control and the ability to shift out of park, so it's important to address this issue promptly.

9. Is the C0116 OBDII code specific to certain vehicle makes and models?

While this code may be more common in certain vehicles, it can potentially occur in any vehicle equipped with an OBDII system and a malfunctioning stop light switch circuit.

10. How often should I check my stop light switch to prevent the C0116 code from appearing?

Regularly inspecting your stop light switch and its associated wiring for any signs of damage or wear can help prevent the occurrence of the C0116 code and ensure the proper functioning of your vehicle's brake lights.