AutoCodes – GMC – P251E 2014 GMC Sierra

P251E 2014 GMC Sierra 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 2014 GMC Sierra 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 177

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 2014 GMC Sierra 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 2014 GMC Sierra - Power Take-Off Engine Shutdown Control Circuit Low Voltage - AutoCodes.com — P251E 2014 GMC Sierra Code - Power Take-Off Engine Shutdown Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P251E 2014 GMC Sierra?

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 2014 GMC Sierra?

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 2014 GMC Sierra 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 P251E 2014 GMC Sierra code?

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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 2014 GMC Sierra Code

1. What are the common symptoms of OBDII code P251E in a 2014 GMC Sierra?

- Common symptoms include loss of power, engine stalling, and difficulty engaging or disengaging the power take-off (PTO) system.

2. What can cause the Power Take-Off Engine Shutdown Control Circuit Low Voltage code in a 2014 GMC Sierra?

- Possible causes include a faulty PTO switch, damaged wiring or connectors in the control circuit, or a malfunctioning PTO control module.

3. How serious is OBDII code P251E in a 2014 GMC Sierra?

- This code can be serious as it may affect the vehicle's drivability and performance, especially if the power take-off system is essential for work or towing purposes.

4. Can driving with OBDII code P251E harm the engine in a 2014 GMC Sierra?

- Driving with this code may cause further damage if the power take-off system is not functioning correctly, leading to potential engine stress or stalling issues.

5. What are some DIY repair tips for addressing OBDII code P251E in a 2014 GMC Sierra?

- Check for loose or damaged wiring in the PTO control circuit, inspect the PTO switch for proper function, and ensure all connectors are securely attached and free of corrosion.

6. How should I diagnose OBDII code P251E in a 2014 GMC Sierra?

- Use a diagnostic scanner to retrieve the code, inspect the power take-off system components for visible damage, and perform a thorough electrical system check.

7. Is it safe to continue driving a 2014 GMC Sierra with the Power Take-Off Engine Shutdown Control Circuit Low Voltage code?

- It is not recommended to drive the vehicle with this code active, as it can lead to potential safety hazards and further damage to the power take-off system.

8. Can resetting the OBDII code P251E in a 2014 GMC Sierra make it go away permanently?

- Resetting the code without addressing the underlying issue will not solve the problem, as the code will likely reappear once the system detects the fault again.

9. How much does it typically cost to repair OBDII code P251E in a 2014 GMC Sierra?

- The cost of repair can vary depending on the specific cause of the code, but it may involve replacing components like the PTO switch, control module, or repairing wiring issues.

10. Can a mechanic easily fix OBDII code P251E in a 2014 GMC Sierra?

- A qualified mechanic with experience in diagnosing and repairing electrical and power take-off system issues should be able to effectively address and resolve this code.