Powertrain
generic / SAE
P251C
PTO Enable Switch Circuit High
The PTO enable switch input reads stuck high — typically a short to battery voltage. The ECM cannot pull the input low, so the switch state is unreadable and PTO mode is locked out for safety.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / 1C
Possible causes
- Switch wire shorted to battery voltage high
- Connector pins corroded - high contact resistance low
- Supply wire pinched against B+ source low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 60–350 €
- Estimated time: 0.3–1.5 h
- Component: pto enable switch
- Component: wiring harness
- MIL / check engine light
Sources
References
sae:J2012