OBD-II code · Powertrain (generic, extended)
P255B PTO Speed Selector Sensor/Switch 2 Range/Performance
PTO speed selector switch 2 is electrically intact but its value does not match a valid bit pattern — multiple positions asserted, or values that do not map to any preset.
Is it safe to drive with P255B?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyContaminated rotary contact
- Less likelySensor element aged beyond calibration window
- Less likelySensor mounting loose - signal damping
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
Related codes
- P255APTO Speed Selector Sensor/Switch 2 Circuit/Open
- P2558Engine Coolant Level Sensor/Switch Circuit Low
- P2559Engine Coolant Level Sensor/Switch Circuit High
- P255CPTO Speed Selector Sensor/Switch 2 Circuit Low
- P255DPTO Speed Selector Sensor/Switch 2 Circuit High
- P255EPTO Speed Selector Sensor/Switch 2 Circuit Intermittent/Erratic
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.