AutoCodes – Chevrolet – P251A 2014 Chevrolet Silverado

P251A 2014 Chevrolet Silverado Code - Power Take-Off Enable Switch Circuit

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) Enable Switch, Power Take Off Enable Switch harness is open or shorted, Power Take Off Enable Switch 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: P251A 2014 Chevrolet Silverado indicates Power Take-Off Enable Switch Circuit.
Common causes: Common causes include Faulty Power Take Off (PTO) Enable Switch, Power Take Off Enable Switch harness is open or shorted, Power Take Off Enable Switch 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 441

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P251A 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 enable switch circuit that is above or below a predetermined voltage threshold.

OBDII Code P251A 2014 Chevrolet Silverado - Power Take-Off Enable Switch Circuit - AutoCodes.com — P251A 2014 Chevrolet Silverado Code - Power Take-Off Enable Switch Circuit

What does this mean?

What are the Possible Causes of the DTC P251A 2014 Chevrolet Silverado?

Faulty Power Take Off (PTO) Enable Switch
Power Take Off Enable Switch harness is open or shorted
Power Take Off Enable Switch circuit poor electrical connection
Faulty Power Take-Off Control Module

How to Fix the DTC P251A 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 P251A 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 P251A 2014 Chevrolet Silverado code?

Need more information on how to fix the P251A 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P251A 2014 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

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 P251A 2014 Chevrolet Silverado Code

1. What does OBDII code P251A mean for a 2014 Chevrolet Silverado?

The code P251A on a 2014 Chevrolet Silverado indicates a problem with the Power Take-Off (PTO) Enable Switch Circuit.

2. What are the common symptoms of OBDII code P251A in a 2014 Chevrolet Silverado?

Common symptoms of code P251A in a 2014 Chevrolet Silverado may include illuminated warning lights on the dashboard, disabled PTO functionality, and potential drivability issues.

3. What are the possible causes of OBDII code P251A in a 2014 Chevrolet Silverado?

Potential causes of code P251A on a 2014 Chevrolet Silverado include a faulty PTO enable switch, damaged wiring or connectors in the circuit, or a malfunctioning PTO control module.

4. How can I diagnose the Power Take-Off Enable Switch Circuit issue causing OBDII code P251A in my 2014 Chevrolet Silverado?

Diagnosing the P251A code in a 2014 Chevrolet Silverado involves inspecting the PTO enable switch, checking the wiring and connectors for damage, and using a diagnostic scanner to identify the specific fault.

5. Can I continue driving my 2014 Chevrolet Silverado with OBDII code P251A?

It is not recommended to drive your 2014 Chevrolet Silverado with an active P251A code, as it can lead to further damage or safety hazards. It's best to address the issue promptly.

6. How can I repair OBDII code P251A in my 2014 Chevrolet Silverado?

Repairing code P251A on a 2014 Chevrolet Silverado may involve replacing the faulty PTO enable switch, repairing damaged wiring or connectors, or reprogramming the PTO control module as needed.

7. Is it possible to reset OBDII code P251A in a 2014 Chevrolet Silverado without fixing the underlying issue?

While clearing the code temporarily may be possible, it will likely reappear until the root cause of the problem is resolved. It's essential to address the underlying issue to prevent further issues.

8. Can a DIY enthusiast fix OBDII code P251A in a 2014 Chevrolet Silverado?

Depending on your mechanical skills and access to tools, some DIY enthusiasts may be able to address code P251A in a 2014 Chevrolet Silverado by following repair guides or consulting with professionals for guidance.

9. How much does it typically cost to repair OBDII code P251A in a 2014 Chevrolet Silverado?

The cost of repairing code P251A in a 2014 Chevrolet Silverado can vary depending on the specific issue, parts needed, and labor rates. It's advisable to obtain quotes from mechanics or repair shops for an accurate estimate.

10. Will fixing OBDII code P251A in my 2014 Chevrolet Silverado improve fuel efficiency or performance?

Resolving code P251A in a 2014 Chevrolet Silverado is more about ensuring proper functionality and safety of the PTO system. While it may indirectly benefit fuel efficiency or performance, the primary goal is to address the underlying issue.