PTO Sense Circuit Intermittent/Erratic
The PTO sense signal jumps or drops out — usually loose connectors, a chattering limit switch, or vibration on the work attachment.
Affected components
- Pto sense circuit
- Pto limit switch
Common causes
- High likelihood: Loose connector
- Medium likelihood: Chattering limit switch
- Low likelihood: Connector with intermittent contact under vibration
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.