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DTC B108C-23: Push Button Start Switch 2 Circuit Malfunction: Notes

WARNING: This page is about a different car, the 2018 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
DTC B108C:23 (START STOP UNIT) DETECTION CONDITION AND POSSIBLE CAUSE

Description Push Button Start Switch 2 Circuit Malfunction
Detection condition
  • Start stop unit detects the push button start switch 2 is stuck on or more.
Fail-safe
  • Perform the control with the push button start switch 2 turned off.
Possible cause
  • Push button start connector or terminal malfunction
  • Start stop unit connector or terminal malfunction
  • Short to ground in wiring harness between start stop unit terminal 2J and push button start terminal I
  • Push button start switch 2 malfunction
  • Start stop unit malfunction
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