AutoCodes – Chevrolet – P251E 2018 Chevrolet Silverado

P251E 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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 241

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 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 P251E 2018 Chevrolet Silverado - Power Take-Off Engine Shutdown Control Circuit Low Voltage - AutoCodes.com — P251E 2018 Chevrolet Silverado Code - Power Take-Off Engine Shutdown Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P251E 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 P251E 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 P251E 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 P251E 2018 Chevrolet Silverado code?

Need more information on how to fix the P251E 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 P251E 2018 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P251E in a 2018 Chevrolet Silverado?

Symptoms may include the engine shutting off unexpectedly, reduced power to the vehicle's accessories, and a warning light on the dashboard.

2. What can cause the OBDII code P251E in a 2018 Chevrolet Silverado?

Common causes include a faulty power take-off (PTO) engine shutdown control module, damaged wiring or connectors in the circuit, or a low voltage condition in the system.

3. How serious is the OBDII code P251E in a 2018 Chevrolet Silverado?

The code indicates a potential issue with the power take-off engine shutdown control circuit, which can affect the vehicle's operation and safety. It is advisable to address this issue promptly.

4. Can I continue driving my 2018 Chevrolet Silverado with the P251E code?

It is not recommended to continue driving with the code present, as it can lead to unexpected engine shutdowns and compromise the vehicle's performance and safety.

5. How can I diagnose the OBDII code P251E in my 2018 Chevrolet Silverado?

Diagnosis typically involves using an OBDII scanner to retrieve the specific fault code, inspecting the PTO engine shutdown control circuit for any visible damage, and testing the related components for proper functionality.

6. What are some repair tips for fixing the P251E code in a 2018 Chevrolet Silverado?

Repair options include repairing or replacing damaged wiring and connectors, testing and replacing the power take-off engine shutdown control module if necessary, and ensuring proper voltage levels in the circuit.

7. Can a DIY enthusiast fix the OBDII code P251E in a 2018 Chevrolet Silverado?

While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing complex electrical issues like this code may require professional expertise and specialized tools.

8. How much does it cost to fix the OBDII code P251E in a 2018 Chevrolet Silverado?

The cost of fixing the P251E code can vary depending on the specific cause of the issue, the extent of the repairs needed, and whether professional labor is required. It is advisable to consult a mechanic for an accurate estimate.

9. Are there any recalls or technical service bulletins related to the P251E code in a 2018 Chevrolet Silverado?

It is recommended to check with Chevrolet or authorized dealerships for any recalls or technical service bulletins related to the OBDII code P251E to see if there are any known issues or solutions provided by the manufacturer.

10. How can I prevent the OBDII code P251E from recurring in my 2018 Chevrolet Silverado?

Regular maintenance, including checking the condition of the power take-off engine shutdown control circuit during scheduled service appointments, can help prevent the recurrence of the P251E code in your Chevrolet Silverado.