B108C Ford 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 Ford 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 Ford 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 Ford?
- 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 Ford?
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 Ford 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 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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