PTO Speed Selector Sensor/Switch 1 Circuit High
PTO speed selector 1 input reads stuck high — short to battery voltage or analog signal pegged at maximum.
Affected components
- Pto speed selector 1
Common causes
- High likelihood: Switch wire shorted to battery voltage
- Low likelihood: Connector pins corroded - high contact resistance
- Low likelihood: Supply wire pinched against B+ source
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.