P251A 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 poor electrical connection
How to Fix Code P251A
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
Engine light on (or service engine soon warning light)
P251A Meaning
The powertrain control module (PCM) monitors the power take-off (PTO) activation circuit. The PCM sets the OBDII code when the (PTO) activation switch is outside factory specifications.