| All About OBDII Engine Codes
AutoCodes - Generic - B108C

B108C Code - Start Button Circuit 'B'

- Code Popularity: 1,826 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
By - Updated Feb 18, 2019
Share on Facebook   Share on Twitter   Share on Linkedin

|B108C code possible causes

  • 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 do I fix code B108C code?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|B108C code tech notes

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

|Cost of diagnosing B108C code

Labor: 1.0

The cost of diagnosing the B108C code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

|What are B108C code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|B108C code description

Conventional Ignition Switch:
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.

OBDII Code B108c - Start Button Circuit 'B' -
B108C Code - Start Button Circuit 'B'

|Need more information with the B108C code?

Need more information on how to fix the B108C code?
Get Access to Factory Service Manuals

|Information for specific makes

|Need help with a B108C code?

Get the B108c code diagnosed by a professional: Find a repair shop in your area

|B108C code comments

Help us improve Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the B108c code? Have you replaced any parts?
Any information is appreciated. Thanks