Code result
P255B
PTO Speed Selector Sensor/Switch 2 Range/Performance
Moderate severity
What it means
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?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Contaminated rotary contact
highOne of the most commonly reported causes for this code — check this first.
Sensor element aged beyond calibration window
lowLess common, but worth ruling out after the more likely causes.
Sensor mounting loose - signal damping
lowLess common, but worth ruling out after the more likely causes.
Related help
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