OBD-II code · Powertrain (generic, extended)
P255A PTO Speed Selector Sensor/Switch 2 Circuit/Open
The second PTO speed-selector switch input is open. Switch 2 typically encodes a binary or multi-bit code together with switch 1 — together they select one of several preset PTO speeds. With switch 2 broken, only the half of the bit pattern is available, so several presets cannot be reached.
Is it safe to drive with P255A?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOpen wire or unplugged switch
- Less likelyPin pushed back out of connector body
- Less likelyCracked solder joint inside the module or sensor
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–1.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Pto Speed Selector 2, Wiring Harness
Related codes
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- P255BPTO Speed Selector Sensor/Switch 2 Range/Performance
- P255CPTO Speed Selector Sensor/Switch 2 Circuit Low
- P255DPTO Speed Selector Sensor/Switch 2 Circuit High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.