P255E code meaning
PTO Speed Selector Sensor/Switch 2 Circuit Intermittent/Erratic
What P255E means
P255E concerns short dropouts or rapid changes on the PTO speed selector 2 signal that do not match deliberate operation. Selector 2 is often the remote control on the body, close to pumps, booms or spreaders, so vibration, spray water and cable movement hit it harder than an in-cab switch. Ram's 2012 chassis cab guide shows the effect of spurious transitions: in remote mode a quick off-on toggle advances to the next of up to five preset speeds, so a flickering contact can step the engine through speeds nobody asked for. No manufacturer publishes P255E. CARB expects such circuit faults to be monitored continuously. P255A would be a permanent open circuit; P254E is the same symptom on selector 1.
P255E at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyMedium, DIY possible
- Typical labor0.5 to 2.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P255E
- Engine steps through preset speeds unexpectedly
- PTO speed unstable while working
- Code appears only under vibration
Common causes of P255E
- Most likelySpray water or moisture in the body-mounted remote switch
- PossibleCable to the remote control flexing at a boom or hinge
- PossibleLoose crimp or terminal in the selector 2 circuit
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Pto speed selector 2
What each part of P255E means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 5 | Area: vehicle speed, idle control and auxiliary inputs. |
| 5E | The exact fault in that area. |
What to do next
- Note P255E and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P255E
What does P255E mean?
P255E means "PTO Speed Selector Sensor/Switch 2 Circuit Intermittent/Erratic". P255E concerns short dropouts or rapid changes on the PTO speed selector 2 signal that do not match deliberate operation. It is a generic code, so it means the same on every make.
Is it safe to drive with P255E?
P255E does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will P255E fail an emissions test?
P255E is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is P255E to fix?
Difficulty: medium. A typical repair takes 0.5 to 2.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P255E clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.