AutoCodes – GMC – P251E 2015 GMC Sierra

P251E 2015 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 2015 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 167

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 2015 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 2015 GMC Sierra - Power Take-Off Engine Shutdown Control Circuit Low Voltage - AutoCodes.com — P251E 2015 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 2015 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 2015 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 2015 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 2015 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 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code P251E in a 2015 GMC Sierra?

- Common symptoms include illuminated Check Engine Light, power take-off system malfunctions, engine shutdown control issues, and reduced vehicle performance.

2. What does the OBDII code P251E Power Take-Off Engine Shutdown Control Circuit Low Voltage indicate in a 2015 GMC Sierra?

- This code indicates that there is low voltage detected in the power take-off engine shutdown control circuit of the vehicle.

3. What are the possible causes of OBDII code P251E in a 2015 GMC Sierra?

- Possible causes include faulty power take-off engine shutdown control circuit wiring, a defective power take-off engine shutdown control module, low battery voltage, or poor electrical connections.

4. How can I diagnose OBDII code P251E in my 2015 GMC Sierra?

- Diagnose the code by checking the wiring and connections in the power take-off engine shutdown control circuit, testing the power take-off engine shutdown control module, and verifying battery voltage levels.

5. Can I continue driving my 2015 GMC Sierra with OBDII code P251E present?

- It is not recommended to continue driving with this code present, as it can lead to power take-off system malfunctions and potential engine shutdown issues.

6. How can I repair OBDII code P251E in my 2015 GMC Sierra?

- Repair options include fixing any damaged wiring or connections in the power take-off engine shutdown control circuit, replacing the faulty power take-off engine shutdown control module, and ensuring proper battery voltage.

7. Can a DIY enthusiast fix OBDII code P251E in a 2015 GMC Sierra?

- Depending on the individual's skill level and access to tools, a DIY enthusiast may be able to address this code by following proper diagnostic procedures and making necessary repairs.

8. Is it safe to clear the OBDII code P251E in my 2015 GMC Sierra using a diagnostic scanner?

- Clearing the code may temporarily turn off the Check Engine Light, but if the underlying issue causing the code is not addressed, it may reappear, leading to potential power take-off system problems.

9. How much does it typically cost to repair OBDII code P251E in a 2015 GMC Sierra at a dealership or mechanic?

- Repair costs can vary depending on the specific cause of the issue, but expect to pay for diagnostic labor, parts replacement (if needed), and any additional services required to resolve the problem.

10. How often does OBDII code P251E occur in 2015 GMC Sierra vehicles?

- While the frequency of this code may vary, it is not a common occurrence in 2015 GMC Sierra vehicles, but when it does happen, prompt attention is necessary to prevent further issues.