AutoCodes – Chevrolet – P251E 2016 Chevrolet Silverado

P251E 2016 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 2016 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 257

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 2016 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 2016 Chevrolet Silverado - Power Take-Off Engine Shutdown Control Circuit Low Voltage - AutoCodes.com — P251E 2016 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 2016 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 2016 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 2016 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 2016 Chevrolet Silverado 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 2016 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P251E in a 2016 Chevrolet Silverado?

- Common symptoms include the engine stalling when engaging the power take-off (PTO) system, reduced engine power, and the check engine light illuminating.

2. What does the OBDII code P251E indicating "Power Take-Off Engine Shutdown Control Circuit Low Voltage" mean for a 2016 Chevrolet Silverado?

- This code indicates a low voltage condition in the engine shutdown control circuit related to the power take-off system in the vehicle.

3. What are the possible causes of OBDII code P251E in a 2016 Chevrolet Silverado?

- Possible causes include a faulty engine shutdown control module, damaged wiring or connectors in the circuit, low battery voltage, or a malfunctioning power take-off switch.

4. How can I diagnose OBDII code P251E in my 2016 Chevrolet Silverado?

- Diagnosing this code may involve checking the voltage levels at various points in the engine shutdown control circuit, inspecting wiring and connectors for damage, and testing the power take-off system components.

5. Can I continue to drive my 2016 Chevrolet Silverado with OBDII code P251E present?

- It is not recommended to drive the vehicle with this code present, as it can lead to potential stalling and other safety issues when using the power take-off system.

6. How can I fix OBDII code P251E in my 2016 Chevrolet Silverado?

- Repairing this code may involve replacing a faulty engine shutdown control module, repairing damaged wiring or connectors, ensuring proper battery voltage, or addressing issues with the power take-off switch.

7. Is it necessary to reset the OBDII code P251E after completing repairs on a 2016 Chevrolet Silverado?

- Yes, it is recommended to clear the code using an OBDII scanner after addressing the underlying issue to reset the check engine light and monitor for any recurrence of the problem.

8. Are there any safety precautions to consider when dealing with OBDII code P251E in a 2016 Chevrolet Silverado?

- Safety precautions may include disconnecting the battery before working on electrical components, following proper diagnostic procedures, and consulting a professional if unsure about making repairs.

9. Can extreme weather conditions affect the occurrence of OBDII code P251E in a 2016 Chevrolet Silverado?

- Yes, extreme temperatures or moisture can potentially impact the electrical components involved in the engine shutdown control circuit, leading to issues that trigger this code.

10. How can regular maintenance help prevent OBDII code P251E from appearing in a 2016 Chevrolet Silverado?

- Regular maintenance, including checking the condition of wiring, connectors, and the power take-off system, can help identify and address potential issues before they trigger this code.