AutoCodes – Ford – P251B Ford

P251B Ford Code - PTO Enable Switch Circuit Low

Quick Answer

The Powertrain Control Module (PCM) monitors the Power Take Off (PTO) Enable Switch 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: P251B Ford indicates PTO Enable Switch Circuit Low.
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 1,522

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
FAQs
Comments
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Code P251B Ford Description

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

OBDII Code P251B Ford - PTO Enable Switch Circuit Low - AutoCodes.com — P251B Ford Code - PTO Enable Switch Circuit Low

What does this mean?

What are the Possible Causes of the DTC P251B Ford?

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 P251B 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 P251B 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.

Need more information about the P251B Ford code?

Need more information on how to fix the P251B Ford code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P251B Ford code diagnosed by a professional: Find a repair shop in your area

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 P251B Ford Code

1. What are the common symptoms of OBDII code P251B Ford (PTO Enable Switch Circuit Low)?

- Common symptoms include the inability to engage the Power Take Off (PTO) system, a check engine light illuminated on the dashboard, and potential loss of power.

2. What can cause the P251B Ford code to trigger?

- The code P251B is typically triggered by a malfunction in the PTO Enable switch circuit, which may be due to a faulty switch, damaged wiring, or a poor connection.

3. How can I diagnose the PTO Enable switch circuit low issue?

- To diagnose the issue, you can use a diagnostic scanner to read the OBDII code P251B. Additionally, you can visually inspect the PTO Enable switch and its wiring for any signs of damage or corrosion.

4. What are the repair options for fixing the P251B Ford code?

- Repair options include replacing the faulty PTO Enable switch, repairing any damaged wiring or connectors, and ensuring proper connection and functionality of the circuit.

5. Can I drive my vehicle with the P251B code present?

- It is generally not recommended to drive with the P251B code present, as it can lead to potential issues with the PTO system and may affect the vehicle's performance.

6. How much does it typically cost to repair the P251B Ford code?

- The cost of repairing the P251B code can vary depending on the exact cause of the issue, but it may involve replacing the PTO Enable switch or repairing wiring, which can range from $100 to $300 or more.

7. Can I reset the P251B code myself after making repairs?

- Once the underlying issue causing the P251B code has been fixed, you can reset the code using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes.

8. Are there any preventive measures to avoid the P251B code from reoccurring?

- To prevent the P251B code from reoccurring, it's essential to regularly inspect the PTO Enable switch and wiring for any signs of wear or damage, and address any issues promptly.

9. Will the P251B code affect the overall drivability of the vehicle?

- While the P251B code may not directly impact the drivability of the vehicle, it can lead to issues with the PTO system and potentially affect the vehicle's performance under certain conditions.

10. How long does it typically take to repair the P251B Ford code?

- The repair time for the P251B code can vary depending on the exact cause of the issue and the complexity of the repair, but it may take anywhere from 1 to 3 hours to complete the repair.