B108C Lincoln Code - Start Button Circuit 'B'
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
- B108C Lincoln indicates Start Button Circuit 'B'.
- 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 B108C 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 B108C 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 B108C 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
B108C:24 Start Button Circuit 'B' Signal Stuck High
B108C:2F Start Button Circuit 'B' Signal Erratic
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B108C 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.
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Frequently Asked Questions about B108C Lincoln Code
1. What are the common symptoms of OBDII code B108C in a Lincoln related to the Start Button Circuit 'B'?
- Common symptoms include the inability to start the vehicle using the push-button start, intermittent starting issues, and potential illumination of the check engine light.
2. What can cause the OBDII code B108C in a Lincoln?
- The code B108C can be triggered by issues such as faulty wiring in the start button circuit, a malfunctioning start button switch, or problems with the vehicle's start button module.
3. How can I diagnose the OBDII code B108C in my Lincoln?
- Diagnosing code B108C may involve using a diagnostic scanner to retrieve the code, inspecting the start button circuit for damaged wiring or loose connections, and testing the start button switch for proper functionality.
4. Is it safe to continue driving my Lincoln with OBDII code B108C present?
- It is not recommended to drive your vehicle with the B108C code active, as it may lead to potential starting issues and further damage to the start button circuit components.
5. Can I repair the OBDII code B108C in my Lincoln on my own?
- While some DIY enthusiasts may attempt to repair code B108C themselves by checking wiring connections and replacing faulty components, it is advisable to seek professional help for an accurate diagnosis and proper repair.
6. How much does it typically cost to fix OBDII code B108C in a Lincoln?
- The cost of repairing code B108C can vary depending on the extent of the issue and the required repairs. It is recommended to get a quote from a qualified mechanic or dealership for an accurate estimate.
7. Are there any preventive measures to avoid OBDII code B108C in a Lincoln?
- To prevent OBDII code B108C, it is advisable to perform regular maintenance checks on the start button circuit, avoid water damage to the start button area, and address any starting issues promptly.
8. What are the long-term effects of ignoring OBDII code B108C in a Lincoln?
- Ignoring code B108C can lead to continued starting problems, potential immobilization of the vehicle, and increased risk of more costly repairs if the underlying issue is not addressed in a timely manner.
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