AutoCodes – Chevrolet – P251E 2014 Chevrolet Silverado

P251E 2014 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 2014 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 254

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 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 2014 Chevrolet Silverado - Power Take-Off Engine Shutdown Control Circuit Low Voltage - AutoCodes.com — P251E 2014 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 2014 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 2014 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 2014 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 2014 Chevrolet Silverado code?

Need more information on how to fix the P251E 2014 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 2014 Chevrolet Silverado Code

1. What does the OBDII code P251E mean on a 2014 Chevrolet Silverado?

P251E indicates an issue with the Power Take-Off (PTO) Engine Shutdown Control Circuit, specifically low voltage being detected.

2. What are the common symptoms of code P251E in a 2014 Chevrolet Silverado?

Symptoms may include the PTO system not functioning, the engine shutting down unexpectedly during PTO operation, a check engine light, and potentially reduced vehicle performance.

3. What causes the P251E code to appear on a 2014 Chevrolet Silverado?

Common causes include a faulty PTO relay, damaged wiring or connections in the PTO circuit, a failing PTO control module, or a weak battery.

4. How can I diagnose code P251E on my 2014 Chevrolet Silverado?

Start by checking the battery voltage, inspecting PTO wiring and connections for damage or corrosion, testing the PTO relay, and scanning for additional codes that could provide more context.

5. Is it safe to drive my 2014 Chevrolet Silverado with a P251E code?

While the vehicle may still be drivable, the PTO system may not function properly, and unexpected engine shutdowns could occur, posing safety risks during operation.

6. Can a low battery cause the P251E code on a 2014 Chevrolet Silverado?

Yes, a low or weak battery can result in insufficient voltage in the PTO circuit, triggering the P251E code.

7. What parts might need to be replaced to fix the P251E code?

Potential parts include the PTO relay, PTO control module, or damaged wiring. In some cases, the battery may also need to be replaced if it's not providing adequate voltage.

8. How much does it cost to repair the P251E code on a 2014 Chevrolet Silverado?

Repair costs can vary but may range from $100 to $500, depending on whether you need to replace wiring, the PTO relay, or the control module.

9. Can I fix the P251E code on my 2014 Chevrolet Silverado myself?

If you're comfortable with basic electrical diagnostics, you can inspect and repair wiring or replace the PTO relay. However, module programming or complex repairs may require professional assistance.

10. How can I prevent the P251E code from recurring on my 2014 Chevrolet Silverado?

Regularly inspect the PTO wiring and connections for damage, ensure the battery is in good condition, and address any electrical issues promptly to avoid circuit malfunctions.