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Code P255E

Quick reference

P255E at a glance

Plain-language meaning
This code means that the computer in your car is having trouble reading a sensor that helps control the speed of a special tool or equipment attached to the vehicle, like a plow or a winch.
Urgency
Moderate – It is important to address this issue to ensure proper operation of PTO equipment.
Difficulty
Moderate
System
Sensor Issue
Tools mentioned
OBD-II scanner, Multimeter, Basic hand tools

This summary uses the existing diagnostic information shown in full below.

Laymans terms

This code means that the computer in your car is having trouble reading a sensor that helps control the speed of a special tool or equipment attached to the vehicle, like a plow or a winch.

Explanation

The code P255E is triggered when the Power Take-Off (PTO) speed selector sensor or switch 2 circuit sends intermittent or erratic signals to the vehicle's computer.

Technical description

The PTO system allows the vehicle to power auxiliary equipment. The speed selector sensor or switch 2 is responsible for providing input to the vehicle's control module about the desired speed of the PTO. If the signal from this sensor or switch is inconsistent or erratic, the control module cannot accurately control the PTO speed, leading to the P255E code.

Symptoms

• Erratic operation of PTO equipment

• Check Engine Light illuminated

• Inability to control PTO speed

Common Causes

• Faulty PTO speed selector sensor/switch

• Wiring issues such as frayed wires or poor connections

• Malfunctioning control module

Glossary

PTO: Power Take-Off, a device that transfers mechanical power from the engine to auxiliary equipment.

Sensor: A device that detects or measures a physical property and records, indicates, or otherwise responds to it.

Diagnosis steps

• Use an OBD-II scanner to confirm the P255E code.

• Inspect the wiring and connectors for the PTO speed selector sensor/switch.

• Test the sensor/switch for proper operation and replace if faulty.

Repair procedures

• Repair or replace damaged wiring or connectors.

• Replace the faulty PTO speed selector sensor/switch.

• Reprogram or replace the control module if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$100 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Ford F-250

• Chevrolet Silverado

• Ram 3500

Preventive measures

• Regularly inspect PTO system wiring and connectors.

• Ensure PTO equipment is properly maintained.

• Avoid exposure of electrical components to harsh conditions.

Error code type

Sensor Issue

User experience recommendations

• Do not use PTO equipment until the issue is resolved.

• Consult a professional mechanic if unsure about repairs.

Warranty information

Check vehicle warranty for coverage on electrical components.

Historical data

This code has been associated with vehicles that frequently use PTO systems for auxiliary equipment.

Urgency level

Moderate – It is important to address this issue to ensure proper operation of PTO equipment.

Testing conditions

• Vehicle in park with engine running

• PTO system engaged

Component location

The PTO speed selector sensor/switch is typically located near the PTO unit, often mounted on the transmission or transfer case.

FAQs

Q: Can I drive my vehicle with the P255E code?
A: While you can drive the vehicle, it's recommended to avoid using the PTO equipment until the issue is fixed.

Q: How do I reset the Check Engine Light after fixing the issue?
A: You can reset the light by using an OBD-II scanner or by disconnecting the battery for a few minutes.

Optional diagnostic gear

Tools that may help diagnose P255E

THINKCAR ThinkScan Bidirectional diagnostic tool illustration

High-End · Full-system diagnostics

THINKCAR ThinkScan Bidirectional

A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.

Network faults often require full-system access instead of a generic code reader alone.

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Klein Tools MM325 diagnostic tool illustration

Universal · Digital multimeter

Klein Tools MM325

A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.

Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.

View on Amazon
WORKPRO Wiring Repair Kit diagnostic tool illustration

Universal · Wire connectors and repair kit

WORKPRO Wiring Repair Kit

Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.

Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.

View on Amazon

These are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.

Source: ezOBD2 diagnostic database
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