OBD Codes List

Diagnostic reference · P255E

P255E

PTO Speed Selector Sensor/Switch 2 Circuit Intermittent/Erratic

System
Speed and idle control (P code)
Lamp
Check Engine Light
Category
Powertrain - Computer and Auxiliary Controls

What it means

P255E means PTO Speed Selector Sensor/Switch 2 Circuit Intermittent/Erratic.

Where it lives

For P255E, the sensor sits on the circuit this code reports. The description of P255E reports a fault at the sensor.

Check these first

  • A loose or chafed PTO speed selector sensor 2 wire
  • Corrosion at the PTO speed selector sensor 2 connector
  • A failing PTO speed selector sensor 2
  • Electrical noise on the PTO speed selector sensor 2 circuit

What to do next

  1. Read PTO speed selector sensor 2 on a scan tool while wiggling the harness
  2. Inspect the PTO speed selector sensor 2 wiring for chafe or looseness
  3. Check the PTO speed selector sensor 2 connector for corrosion
  4. Check the PTO speed selector sensor 2 adjustment
  5. Replace the PTO speed selector sensor 2 if the harness tests good
  6. Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.