B108B Lincoln Code - Start Button Circuit 'A'
Quick Answer
Conventional Ignition Switch: The ignition switch is a multiple position rotary switch that is controlled by a lock cylinder and a key. Common causes include Faulty Start Button Switch, Start Button Switch harness is open or shorted, Start Button Switch circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- B108B Lincoln indicates Start Button Circuit 'A'.
- Common causes
- Common causes include Faulty Start Button Switch, Start Button Switch harness is open or shorted, Start Button Switch circuit poor electrical connection.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Code B108B Lincoln Description
The ignition switch is a multiple position rotary switch that is controlled by a lock cylinder and a key. The ignition switch provides voltage to the ACC, ON, or START-designated circuits depending on the position it is placed. The Body Control Module (BCM) calculates the positions based on the voltage received from the ACC and ON-designated circuits.
The key removal inhibit solenoid (also known as the key release interlock actuator) is an electronically controlled solenoid that prevents the ignition lock cylinder from being turned to the OFF position unless the gear selector lever is in the PARK position. The key removal inhibit solenoid is part of the ignition switch.
Push Button Ignition Switch:
The push button ignition switch is used instead of a conventional ignition switch to achieve the various ignition modes. The push button ignition switch is a momentary dual contact switch. Both sets of contacts are normally open and receive the voltage at all times. When the START/STOP button is pressed, the voltage is sent to the BCM, the RFA module, and the PCM to indicate a button press.
The ignition switch has a LED for switch illumination when the backlighting is activated.
What are the Possible Causes of the DTC B108B Lincoln?
- Faulty Start Button Switch
- Start Button Switch harness is open or shorted
- Start Button Switch circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B108B Lincoln?
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.
Code Tech Notes
B108B:24 Start Button Circuit 'A' Signal Stuck High
B108B:2F Start Button Circuit 'A' Signal Erratic
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B108B Lincoln 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 B108B Lincoln code?
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Need Help with the Code?
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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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