P251D Possible Causes
- Faulty Power Take-Off (PTO) activation switch
- Power Take-Off (PTO) activation switch harness is open or shorted
- Power Take-Off (PTO) activation switch circuit has poor electrical connection
How to Fix Code P251D
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
Illuminated engine light (or service engine soon warning light)
P251D Meaning
The Powertrain Control Module (PCM) monitors the Power Take-Off (PTO) engine shutdown circuit. The PCM sets the OBDII code when the Power Take-Off (PTO) shutdown is outside factory specifications.