Brake Switch B Circuit High
Brake Switch B Circuit High: the signal voltage is above the expected range. Often an open circuit or a short to supply voltage.
Affected components
- Brake switch
- Switch wiring
Common causes
- High likelihood: Brake switch defective
- Medium likelihood: Wiring open
- Low likelihood: Connector pins corroded - high contact resistance
Possible symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Diagnostic notes
- The malfunction indicator lamp may illuminate
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.