AutoCodes – Chevrolet – P251F 2015 Chevrolet Silverado

P251F 2015 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 2015 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 298

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 2015 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 2015 Chevrolet Silverado - Power Take-Off Engine Shutdown Control Circuit High Voltage - AutoCodes.com — P251F 2015 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 2015 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 2015 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 2015 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 2015 Chevrolet Silverado code?

Need more information on how to fix the P251F 2015 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 2015 Chevrolet Silverado Code

1. What does OBDII code P251F mean on a 2015 Chevrolet Silverado?

P251F indicates a high voltage issue in the Power Take-Off (PTO) Engine Shutdown Control Circuit, which is responsible for managing the PTO system used in specific applications like auxiliary equipment.

2. What are common symptoms of code P251F in a 2015 Silverado?

Symptoms may include the PTO system not working properly, the Check Engine Light illuminating, or the engine shutting down unexpectedly when the PTO is engaged.

3. What causes code P251F to appear in a 2015 Chevrolet Silverado?

Common causes include a faulty PTO control module, damaged wiring or connectors in the circuit, a failing PCM (Powertrain Control Module), or issues with the PTO system's electrical components.

4. Can a damaged PTO switch cause code P251F?

Yes, a malfunctioning PTO switch can disrupt the circuit and lead to high voltage readings, triggering the P251F code.

5. How can I diagnose the P251F code on my Silverado?

Start by inspecting the PTO circuit wiring and connectors for damage or corrosion. Use a multimeter to check for abnormal voltages. If no issues are found, test the PTO control module and related components.

6. Is it safe to drive with a P251F code on my 2015 Silverado?

Driving may be unsafe if the PTO system is malfunctioning, as it could cause unexpected engine shutdowns. Itâ€™s best to address the issue promptly.

7. How do I fix the P251F code on a 2015 Chevrolet Silverado?

Repairs may involve replacing damaged wiring, repairing faulty connectors, replacing the PTO control module, or reprogramming the PCM if necessary.

8. Can a low battery cause the P251F code?

A low or unstable battery is unlikely to directly cause the P251F code but can contribute to electrical issues that may affect the PTO system.

9. How much does it cost to repair the P251F code on a Silverado?

Repair costs vary, but diagnosing and fixing the issue may cost between $100 and $500, depending on whether it's a wiring issue, a failed module, or another component.

10. Can I clear the P251F code without repairing it?

Clearing the code with a scanner may turn off the Check Engine Light temporarily, but if the problem isnâ€™t resolved, the code will likely reappear.