P251E 2016 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 2016 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.
Code P251E 2016 GMC Sierra Description
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.
What are the Possible Causes of the DTC P251E 2016 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 2016 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 2016 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.
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Frequently Asked Questions about P251E 2016 GMC Sierra Code
1. What does OBDII code P251E mean on a 2016 GMC Sierra?
P251E indicates a "Power Take-Off (PTO) Engine Shutdown Control Circuit Low Voltage," meaning the vehicle's system has detected insufficient voltage in the PTO engine shutdown circuit.
2. What are the symptoms of code P251E in a 2016 GMC Sierra?
Common symptoms include the check engine light turning on, issues engaging or operating the PTO, reduced engine performance, or the engine shutting down unexpectedly.
3. What causes the P251E code to appear?
Potential causes include a faulty PTO switch, damaged or corroded wiring in the PTO control circuit, a defective PTO control module, or a failing battery or alternator.
4. Can I drive my 2016 GMC Sierra with a P251E code?
While the vehicle may still be drivable, operating it with this code could lead to PTO function issues or unexpected engine shutdowns, which may pose safety risks.
5. How do I fix the P251E code on a 2016 GMC Sierra?
Repairs may involve inspecting and repairing wiring or connectors in the PTO circuit, replacing a faulty PTO switch or control module, or addressing battery and charging system issues.
6. How do I diagnose the cause of the P251E code?
Use a diagnostic scan tool to confirm the code, visually inspect the PTO circuit wiring and connectors, and test the voltage in the circuit to identify any irregularities.
7. What tools are needed to troubleshoot the P251E code?
You may need an OBDII scanner, a multimeter to test voltage, and basic hand tools for inspecting wiring and connectors.
8. How much does it cost to repair the P251E code on a 2016 GMC Sierra?
Repair costs will vary depending on the issue but could range from $50 for a simple wiring repair to $500 or more for a new PTO control module.
9. Does the P251E code always indicate a major problem?
Not necessarily. It could simply be caused by a loose or corroded connection, though it’s important to address it promptly to avoid further issues.
10. Can a weak battery cause the P251E code on a 2016 GMC Sierra?
Yes, a weak or failing battery can lead to low voltage in the PTO circuit, triggering the P251E code.
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