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Engine-Codes – Lincoln – B108B Lincoln

B108B Lincoln Code - Start Button Circuit 'A'

Quick Answer

The B108B diagnostic trouble code for Lincoln vehicles refers to an issue with the Start Button Circuit 'A'. Common causes include Corrosion or damage to wiring in the start button circuit, Loose or poor connections in the circuit, Faulty start button switch. 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
B108B Lincoln indicates Start Button Circuit 'A'.
Common causes
Common causes include Corrosion or damage to wiring in the start button circuit, Loose or poor connections in the circuit, Faulty start button switch.
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 15, 2024
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Code B108B Lincoln Description

The B108B diagnostic trouble code for Lincoln vehicles refers to an issue with the Start Button Circuit 'A'. This code indicates that there is a malfunction in the circuit that controls the vehicle's start button. 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 is compromised, it can lead to difficulties in starting the vehicle, potential safety hazards, and overall inconvenience for the driver.

OBDII Code B108B Lincoln - Start Button Circuit 'A'
B108B Lincoln Code - Start Button Circuit 'A'

Common Causes of B108B Lincoln

  1. Corrosion or damage to wiring in the start button circuit.
  2. Loose or poor connections in the circuit.
  3. Faulty start button switch.
  4. Issues with the start button control module.
  5. Water or moisture damage affecting the circuit components.

Symptoms of B108B Lincoln

  1. Engine does not start when the start button is pressed.
  2. Intermittent starting issues where the engine may start sometimes but not others.
  3. Vehicle stalls unexpectedly while driving.
  4. Illumination of the check engine light on the dashboard.
  5. Loss of power or electrical functions in the vehicle.

How to Fix B108B Lincoln

  1. Begin by conducting a thorough inspection of the start button circuit, checking for any visible damage, corrosion, or loose connections.
  2. Test the start button switch and control module for proper functionality using a multimeter or diagnostic tool.
  3. Replace any damaged wiring, connectors, or components in the circuit as needed.
  4. Clear the diagnostic trouble codes from the vehicle's computer system and test the start button to ensure proper operation.
  5. If the issue persists, consult a professional technician for further diagnosis and repair.

Cost to Fix B108B Lincoln

The typical repair costs for addressing a Start Button Circuit 'A' issue in a Lincoln vehicle can vary depending on the extent of the damage and the specific components that need to be replaced. On average, the repair costs for this issue can range from $200 to $500, including parts and labor. However, it's important to note that diagnostic time and labor rates at auto repair shops can vary significantly based on location, vehicle make and model, and engine type. It's recommended to obtain quotes from local auto repair shops to get a more accurate estimate for this repair.

What does this mean?

Tech Notes for B108B Lincoln

B108B:23 Start Button Circuit 'A' Signal Stuck Low

B108B:24 Start Button Circuit 'A' Signal Stuck High

B108B:2F Start Button Circuit 'A' 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 B108B Lincoln Code

1. What are the common symptoms of OBDII code B108B in a Lincoln related to the Start Button Circuit 'A'?

- Common symptoms include the inability to start the vehicle using the push-button start, intermittent starting issues, and the engine not cranking when the start button is pressed.

2. What are the possible causes of OBDII code B108B in a Lincoln?

- Possible causes of this code include a faulty start button switch, damaged wiring or connectors in the start button circuit, or a malfunctioning control module.

3. How can I diagnose the Start Button Circuit 'A' issue in my Lincoln?

- To diagnose this issue, you can start by checking the wiring and connectors in the start button circuit for any visible damage or corrosion. You can also use a multimeter to test the continuity of the circuit and check the start button switch for proper functionality.

4. Can a DIY enthusiast repair OBDII code B108B in a Lincoln?

- Depending on your skill level and experience with automotive electrical systems, you may be able to repair this issue yourself. However, it is recommended to consult a professional technician for an accurate diagnosis and repair.

5. Are there any tips for repairing OBDII code B108B in a Lincoln?

- One tip for repairing this code is to carefully inspect all wiring and connectors in the start button circuit before replacing any components. Additionally, following the manufacturer's service manual for your specific Lincoln model can provide valuable guidance during the repair process.

6. Is it safe to continue driving my Lincoln with OBDII code B108B present?

- It is not recommended to continue driving your Lincoln with this code present, as it can lead to potential starting issues or complete failure to start the vehicle. It is best to address the issue promptly to avoid being stranded.

7. How much does it typically cost to repair OBDII code B108B in a Lincoln?

- The cost of repairing this code can vary depending on the specific cause of the issue and the labor rates in your area. It is advisable to obtain quotes from different auto repair shops to compare prices and services.

8. Can weather conditions affect the Start Button Circuit 'A' in a Lincoln and trigger OBDII code B108B?

- Extreme weather conditions, such as extreme cold or moisture, can potentially affect the start button circuit in a Lincoln and lead to issues triggering OBDII code B108B. Ensuring proper insulation and protection of the circuit can help prevent weather-related problems.

9. Will disconnecting the battery reset the OBDII code B108B in a Lincoln?

- Disconnecting the battery may temporarily reset the code, but it is not a recommended long-term solution. The underlying issue causing the code will still need to be diagnosed and repaired to prevent it from reoccurring.

10. Can a weak car battery cause OBDII code B108B to appear in a Lincoln?

- A weak or failing car battery can potentially cause electrical issues, including triggering OBDII code B108B in a Lincoln. It is advisable to have the battery tested and replaced if necessary to rule out any potential contributing factors to the code.

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