AutoCodes – Chevrolet – P251F 2018 Chevrolet Silverado

P251F 2018 Chevrolet Silverado Code - Power Take-Off Engine Shutdown Control Circuit High 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: P251F 2018 Chevrolet Silverado indicates Power Take-Off Engine Shutdown Control Circuit High 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 227

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 P251F 2018 Chevrolet Silverado 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 P251F 2018 Chevrolet Silverado - Power Take-Off Engine Shutdown Control Circuit High Voltage - AutoCodes.com — P251F 2018 Chevrolet Silverado Code - Power Take-Off Engine Shutdown Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P251F 2018 Chevrolet Silverado?

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 P251F 2018 Chevrolet Silverado?

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 P251F 2018 Chevrolet Silverado 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 P251F 2018 Chevrolet Silverado code?

Need more information on how to fix the P251F 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 P251F 2018 Chevrolet Silverado Code

1. What are common symptoms of OBDII code P251F in a 2018 Chevrolet Silverado?

- Common symptoms include the illumination of the check engine light, reduced engine power, and potential issues with the vehicle's power take-off system.

2. What does the OBDII code P251F for a 2018 Chevrolet Silverado indicate?

- OBDII code P251F indicates a malfunction in the Power Take-Off Engine Shutdown Control Circuit, specifically high voltage.

3. What are possible causes of the OBDII code P251F in a 2018 Chevrolet Silverado?

- Possible causes include a faulty power take-off control module, damaged wiring or connectors in the circuit, or an issue with the power take-off system itself.

4. How can I diagnose the OBDII code P251F in my 2018 Chevrolet Silverado?

- Diagnosis typically involves using an OBDII scanner to retrieve the code, inspecting the power take-off system components, and testing the control module and circuit for proper voltage levels.

5. Can I continue to drive my 2018 Chevrolet Silverado with the OBDII code P251F present?

- It is not recommended to continue driving with the code present, as it can lead to further damage to the power take-off system and potentially affect the vehicle's performance and safety.

6. How can I repair the OBDII code P251F in my 2018 Chevrolet Silverado?

- Repair options include replacing the faulty power take-off control module, repairing damaged wiring or connectors, and ensuring proper functioning of the power take-off system.

7. Is it necessary to reset the OBDII code P251F after making repairs to a 2018 Chevrolet Silverado?

- Yes, it is important to clear the code using an OBDII scanner after making repairs to ensure the issue has been resolved and to turn off the check engine light.

8. Can I fix the OBDII code P251F in my 2018 Chevrolet Silverado myself, or should I seek professional help?

- While some repairs related to this code may be done by DIY enthusiasts, it is recommended to seek professional help, especially for diagnosing and repairing complex electrical issues.

9. How much does it typically cost to repair the OBDII code P251F in a 2018 Chevrolet Silverado?

- Repair costs can vary depending on the exact cause of the issue, but they may range from a few hundred to over a thousand dollars, including parts and labor.

10. Are there any preventive maintenance measures to avoid the OBDII code P251F in a 2018 Chevrolet Silverado?

- Regular inspection of the power take-off system and its components, as well as addressing any warning signs promptly, can help prevent the occurrence of the P251F trouble code.