AutoCodes – Ford – P251E Ford

P251E Ford Code - Power Take-Off Engine Shutdown Control Circuit Low Voltage

Quick Answer

The Power Take-Off (PTO) is an upfitter integrated system that allows the user to create an auxiliary power source. Common causes include Faulty Power Take-Off (PTO) Control Module, Power Take-Off Control Module harness is open or shorted, Power Take-Off Control Module 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: P251E Ford indicates Power Take-Off Engine Shutdown Control Circuit Low Voltage.
Common causes: Common causes include Faulty Power Take-Off (PTO) Control Module, Power Take-Off Control Module harness is open or shorted, Power Take-Off Control Module 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 1,504

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 Sep 21, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P251E Ford Description

The Power Take-Off (PTO) is an upfitter integrated system that allows the user to create an auxiliary power source. The PTO system specifically controls engine speed to values higher than normal base idle, PTO load relay engagement, and remote starting and shutdown of the engine. When the operator requests PTO using either the PTO switch or PTO remote, the engine RPM will increase to a default standby speed. The Engine Control Module (ECM) converts the data from the engine speed sensor to a 2 pulses/engine revolution signal. When PTO is engaged, the power take-off control module sends a serial data message to the ECM requesting engine speeds, in response to signals from the PTO switch or remote.
The Diagnostic Trouble Code (DTC) will be set when the Power Take-Off Control Module detects a fault on the PTO engine shutdown control circuit that is above or below a predetermined voltage threshold.

OBDII Code P251E Ford - Power Take-Off Engine Shutdown Control Circuit Low Voltage - AutoCodes.com — P251E Ford Code - Power Take-Off Engine Shutdown Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P251E Ford?

Faulty Power Take-Off (PTO) Control Module
Power Take-Off Control Module harness is open or shorted
Power Take-Off Control Module circuit poor electrical connection

How to Fix the DTC P251E Ford?

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 P251E Ford 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.

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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.

Frequently Asked Questions about P251E Ford Code

1. What are the common symptoms of OBDII code P251E in a Ford vehicle?

- Common symptoms include engine stalling, rough idling, and difficulty starting the vehicle.

2. What does the OBDII code P251E Ford indicate?

- The code P251E indicates a low voltage condition in the Power Take-Off Engine Shutdown Control Circuit.

3. What are the possible causes of OBDII code P251E in a Ford vehicle?

- Possible causes may include a faulty power take-off (PTO) control module, damaged wiring or connectors, or a weak battery.

4. How can I diagnose the OBDII code P251E in my Ford vehicle?

- Diagnosis involves using a diagnostic scanner to retrieve the trouble codes, inspecting the PTO control module and related components, and testing the circuit for proper voltage.

5. Can I continue driving my Ford vehicle with the OBDII code P251E present?

- It is not recommended to drive the vehicle with this code present, as it may lead to further damage or safety issues.

6. How can I repair OBDII code P251E in my Ford vehicle?

- Repair may involve replacing the PTO control module, repairing or replacing damaged wiring, or addressing any underlying battery issues.

7. Are there any DIY tips to troubleshoot OBDII code P251E before seeking professional help?

- You can start by checking the battery voltage, inspecting the wiring for any visible damage, and ensuring all connectors are securely attached.

8. Can a weak battery cause the OBDII code P251E to trigger?

- Yes, a weak or failing battery can contribute to the low voltage condition that triggers the P251E trouble code.

9. Is it necessary to reset the trouble codes after repairing OBDII code P251E in a Ford vehicle?

- Yes, it is recommended to clear the trouble codes using a diagnostic scanner after repairing the underlying issue to ensure the codes do not reappear.

10. How can I prevent OBDII code P251E from occurring in the future in my Ford vehicle?

- Regular maintenance, including checking the battery health, inspecting wiring for damage, and addressing any electrical issues promptly, can help prevent the recurrence of the P251E trouble code.