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Engine-Codes – Ford – B108C Ford

B108C Ford Code - Start Button Circuit 'B'

Quick Answer

The B108C diagnostic trouble code for Ford vehicles relates to the Start Button Circuit 'B'. Common causes include Faulty wiring or connectors in the start button circuit, Electrical issues, such as a blown fuse or relay, Moisture or corrosion in the circuit components. 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
B108C Ford indicates Start Button Circuit 'B'.
Common causes
Common causes include Faulty wiring or connectors in the start button circuit, Electrical issues, such as a blown fuse or relay, Moisture or corrosion in the circuit components.
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 09, 2024
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Code B108C Ford Description

The B108C diagnostic trouble code for Ford vehicles relates to the Start Button Circuit 'B'. This code indicates a problem with the circuit that controls the start button in the vehicle. The start button is a key component of the vehicle's ignition system, allowing the driver to start the engine with a simple push of a button. When this circuit malfunctions, it can prevent the vehicle from starting properly or cause other issues with the ignition system.

OBDII Code B108C Ford - Start Button Circuit 'B'
B108C Ford Code - Start Button Circuit 'B'

Common Causes of B108C Ford

  1. Faulty wiring or connectors in the start button circuit
  2. Electrical issues, such as a blown fuse or relay
  3. Moisture or corrosion in the circuit components
  4. Damaged start button or related components
  5. Faulty ignition switch

Symptoms of B108C Ford

  1. Difficulty starting the vehicle
  2. Engine stalling or misfiring
  3. Intermittent starting problems
  4. Inability to start the engine

How to Fix B108C Ford

  1. Diagnose the specific cause of the B108C code using a diagnostic scanner to pinpoint the issue in the start button circuit.
  2. Inspect the wiring, connectors, and components associated with the start button circuit for any signs of damage, wear, or corrosion.
  3. Test the start button and related components to ensure proper functionality and replace any faulty parts as needed.
  4. Reset the diagnostic trouble code using the scanner and test the vehicle to verify that the issue has been resolved.
  5. If the problem persists, seek professional assistance from a qualified mechanic or dealership to further diagnose and repair the start button circuit.

Cost to Fix B108C Ford

The typical repair costs for addressing the B108C code on a Ford vehicle can vary depending on the specific cause of the issue and the extent of the repair needed. In general, the cost of parts and labor for this repair can range from $100 to $300. However, it's important to note that diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check with local repair shops for a more accurate estimate based on your specific circumstances.

What does this mean?

Tech Notes for B108C Ford

B108C:23 Start Button Circuit 'B' Signal Stuck Low

B108C:24 Start Button Circuit 'B' Signal Stuck High

B108C:2F Start Button Circuit 'B' Signal Erratic

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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 B108C Ford Code

1. What are the common symptoms of OBDII code B108C Ford related to the Start Button Circuit 'B'?

- The common symptoms include difficulty starting the vehicle, intermittent starting issues, or complete failure of the start button functionality.

2. What are the possible causes of OBDII code B108C Ford?

- The code B108C Ford may be triggered by a faulty start button, damaged wiring or connectors in the start button circuit, or issues with the vehicle's electronic control module (ECM).

3. How can I diagnose the OBDII code B108C Ford?

- Diagnosing the code involves using a diagnostic scanner to read the code, checking the start button for proper functioning, inspecting the wiring and connectors for damage, and testing the ECM for any faults.

4. Can I still drive my vehicle with OBDII code B108C Ford?

- It is not recommended to drive the vehicle with a persistent B108C code, as it can lead to potential starting issues and may leave you stranded.

5. What are some repair tips for fixing OBDII code B108C Ford?

- Repair tips include checking and replacing a faulty start button, repairing or replacing damaged wiring and connectors, and reprogramming the ECM if necessary.

6. How much does it cost to repair OBDII code B108C Ford?

- The cost of repair can vary depending on the specific cause of the code, but it may range from a few hundred to a thousand dollars, including parts and labor.

7. Can I reset OBDII code B108C Ford on my own?

- While you can clear the code with a diagnostic scanner, it is important to diagnose and fix the underlying issue causing the code to prevent it from recurring.

8. How long does it take to repair OBDII code B108C Ford?

- The repair time can vary based on the exact cause of the code and the complexity of the repair, but it may take a few hours to a full day to complete the repair.

9. Is OBDII code B108C Ford a common issue in Ford vehicles?

- The B108C code related to the Start Button Circuit 'B' is not as common as some other OBDII codes, but it can still occur in Ford vehicles with start button ignition systems.

10. Can a DIY enthusiast fix OBDII code B108C Ford at home?

- Depending on your skill level and access to tools, a DIY enthusiast may be able to address simple causes of the B108C code, such as checking and replacing the start button or repairing damaged wiring. However, more complex issues may require professional assistance.

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