P255A Fault Code

PTO Speed Selector Sensor/Switch 2 Circuit/Open

• What does that mean?
• Symptoms
• Causes
• Solutions

The PTO Speed Selector Sensor/Switch 2 Circuit/Open fault code indicates an issue with the circuit connected to the PTO (Power Take-Off) speed selector switch or sensor. This circuit is responsible for relay signals that determine the operational status of the PTO system in vehicles equipped with such functionality. An open circuit suggests that there is a break in the wiring or a malfunction in the sensor itself.

What are the symptoms of the P255A code?

Symptoms associated with this fault code may consist of:

• Inability to engage or disengage the PTO system effectively.
• Warning lights on the dashboard related to PTO operation.
• Erratic or unexpected changes in PTO speed.
• Decreased performance of PTO-driven attachments or equipment.
• Diagnostic trouble codes (DTCs) specifically indicating issues related to the PTO system.

What causes the P255A code?

Common causes for this fault include:

• Damaged or corroded wiring leading to the PTO speed selector sensor.
• A faulty PTO speed selector switch.
• Poor electrical connections or loose connectors.
• Internal sensor malfunction or failure.
• Issues in the Vehicle Control Module (VCM) affecting sensor readings.

How to fix P255A?

To resolve the PTO Speed Selector Sensor/Switch 2 Circuit/Open fault, technicians should:

• Inspect the wiring and connectors associated with the PTO speed selector sensor for damage, corrosion, or looseness.
• Test the PTO speed selector switch for proper functionality and replace if faulty.
• Ensure all electrical connections are secure and free of contaminants.
• If issues persist, consider testing or replacing the Vehicle Control Module (VCM) to rule out control system faults.