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C111A Ford Code - Right Stop Lamp Circuit

Quick Answer

The C111A Ford diagnostic trouble code (DTC) specifically refers to the Right Stop Lamp Circuit. Common causes include Faulty right brake light bulb, Wiring issues such as a short circuit or open circuit in the right stop lamp circuit, Defective body control module (BCM) or lighting control module (LCM). 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
C111A Ford indicates Right Stop Lamp Circuit.
Common causes
Common causes include Faulty right brake light bulb, Wiring issues such as a short circuit or open circuit in the right stop lamp circuit, Defective body control module (BCM) or lighting control module (LCM).
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code C111A Ford Description

The C111A Ford diagnostic trouble code (DTC) specifically refers to the Right Stop Lamp Circuit. This code indicates a malfunction in the circuit that controls the right stop lamp on the vehicle. The stop lamp, also known as the brake light, is a crucial safety feature that alerts other drivers when you are braking, helping to prevent accidents and ensure road safety.

OBDII Code C111A Ford - Right Stop Lamp Circuit
C111A Ford Code - Right Stop Lamp Circuit

Common Causes of C111A Ford

  1. Faulty right brake light bulb.
  2. Wiring issues such as a short circuit or open circuit in the right stop lamp circuit.
  3. Defective body control module (BCM) or lighting control module (LCM).
  4. Poor connection or corrosion in the wiring harness.
  5. Impact damage to the right stop lamp assembly.

Symptoms of C111A Ford

  1. Right brake light not illuminating when the brake pedal is pressed.
  2. Dashboard warning light indicating a brake light malfunction.
  3. Flickering or dim right brake light.
  4. Inconsistent brake light operation.

How to Fix C111A Ford

  1. Begin by inspecting the right brake light bulb to ensure it is not burnt out. Replace the bulb if necessary.
  2. Check the wiring harness for any visible damage or loose connections. Repair or replace any damaged wiring.
  3. Use a multimeter to test the continuity of the right stop lamp circuit to identify any electrical faults.
  4. Inspect the body control module (BCM) or lighting control module (LCM) for any signs of damage or malfunction. Replace if needed.
  5. Clear the DTC and test the right stop lamp circuit to ensure the issue has been resolved.

Cost to Fix C111A Ford

The cost of repairing the Right Stop Lamp Circuit can vary depending on the specific cause of the issue and the required repairs. On average, the cost of replacing a brake light bulb ranges from $5 to $20, while fixing wiring issues or replacing a BCM/LCM can cost anywhere from $100 to $500 or more. Labor costs can add an additional $80 to $150 per hour, depending on the shop rates. It's recommended to consult with a professional mechanic to get an accurate estimate based on your vehicle's make and model.

What does this mean?

Tech Notes for C111A Ford

C111A:11 Right Stop Lamp Circuit Short to Ground
C111A:15 Right Stop Lamp Circuit Short to Battery or Open

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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 C111A Ford Code

1. What are common symptoms of OBDII code C111A for the Right Stop Lamp Circuit in a Ford vehicle?

The common symptoms include the right stop lamp not functioning, brake light warning on the dashboard, and potential issues with the vehicle's brake system.

2. What are possible causes of OBDII code C111A in a Ford related to the Right Stop Lamp Circuit?

Possible causes include a faulty right stop lamp bulb, damaged wiring or connectors, a defective brake light switch, or issues with the vehicle's body control module.

3. How can I diagnose the OBDII code C111A for the Right Stop Lamp Circuit in my Ford?

You can start by visually inspecting the right stop lamp bulb, checking the wiring and connectors for any damage, testing the brake light switch for proper operation, and using an OBDII scanner to retrieve the specific fault code.

4. Can I still drive my Ford with the OBDII code C111A for the Right Stop Lamp Circuit illuminated?

It is not recommended to drive the vehicle with this issue unresolved, as it may pose a safety hazard due to the malfunctioning brake light. It is best to address the problem promptly.

5. How can I repair OBDII code C111A in my Ford related to the Right Stop Lamp Circuit?

Depending on the root cause, you may need to replace the right stop lamp bulb, repair any damaged wiring or connectors, replace the brake light switch, or seek professional assistance for diagnosing and fixing the issue.

6. Is it possible for a loose connection to trigger OBDII code C111A for the Right Stop Lamp Circuit in a Ford?

Yes, a loose or poor connection in the right stop lamp circuit can cause the code to trigger. Ensure all connections are secure and properly seated during diagnosis and repair.

7. Will resetting the OBDII code C111A for the Right Stop Lamp Circuit in my Ford make the issue go away permanently?

Resetting the code may temporarily turn off the warning light, but if the underlying issue is not addressed, the code is likely to reappear. It is crucial to identify and fix the root cause of the problem.

8. Can a malfunctioning turn signal affect the triggering of OBDII code C111A in a Ford related to the Right Stop Lamp Circuit?

Yes, a malfunctioning turn signal that shares wiring or components with the right stop lamp circuit can potentially impact the triggering of the code. It is advisable to check both systems for any related issues.

9. Are there any DIY tips for troubleshooting OBDII code C111A for the Right Stop Lamp Circuit in a Ford?

You can start by checking the right stop lamp bulb, inspecting the wiring visually, and ensuring the brake light switch is functioning correctly. However, for more complex issues, it is recommended to consult a professional mechanic.

10. How important is it to address OBDII code C111A for the Right Stop Lamp Circuit in a Ford promptly?

It is crucial to address this issue promptly as a malfunctioning right stop lamp can compromise road safety by affecting the visibility of your vehicle to other drivers. Ignoring the problem can lead to potential accidents.

1. What are the common symptoms of OBDII code C111A for the right stop lamp circuit in a Ford vehicle?

The common symptoms include a non-functioning right brake light, brake light staying on constantly, or a warning light on the dashboard indicating a brake light issue.

2. What are the possible causes of OBDII code C111A in a Ford related to the right stop lamp circuit?

Possible causes include a faulty right brake light bulb, a damaged wiring harness leading to the right brake light, a malfunctioning brake light switch, or a problem with the body control module.

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