AutoCodes – Generic – P251D

P251D Code - PTO Engine Shutdown Circuit/Open

Quick Answer

The Powertrain Control Module (PCM) monitors the Power Take Off (PTO) Engine Shutdown circuit. Common causes include Faulty Power Take Off (PTO) Enable Switch, Power Take Off (PTO) Enable Switch harness is open or shorted, Power Take Off (PTO) Enable Switch circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P251D indicates PTO Engine Shutdown Circuit/Open.
Common causes: Common causes include Faulty Power Take Off (PTO) Enable Switch, Power Take Off (PTO) Enable Switch harness is open or shorted, Power Take Off (PTO) Enable Switch circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 5,434

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 17, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P251D Description

The Powertrain Control Module (PCM) monitors the Power Take Off (PTO) Engine Shutdown circuit. The PCM sets the OBDII code when the PTO Engine Shutdown is out of factory specifications.

OBDII Code P251D - PTO Engine Shutdown Circuit/Open - AutoCodes.com — P251D Code - PTO Engine Shutdown Circuit/Open

What does this mean?

What are the Possible Causes of the DTC P251D?

Faulty Power Take Off (PTO) Enable Switch
Power Take Off (PTO) Enable Switch harness is open or shorted
Power Take Off (PTO) Enable Switch circuit poor electrical connection

How to Fix the DTC P251D?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P251D code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P251D code?

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Information for Specific Makes

P251D Ford — PTO Engine Shutdown Circuit/Open

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.