P251F
PTO Engine Shutdown Circuit High
P251F is an OBD-II diagnostic trouble code meaning: PTO Engine Shutdown Circuit High. Common causes: open or short circuit in the pto engine shutdown circuit, faulty pto sensor/switch. Estimated repair cost: $6–56.
Symptoms
- Check Engine Light Is On
- The engine does not turn off when the PTO is activated
- Unable to activate PTO
- Possible problems with engine control
- Reduced engine power
Causes
- Open or short circuit in the PTO engine shutdown circuit
- Faulty PTO sensor/switch
- Problems with wiring or connectors
- ECU malfunction (rare)
- Contact corrosion
How to Fix
- Check wiring and connectors for damage or corrosion
- Check PTO sensor/switch for proper operation
- Measure the voltage in the PTO engine cut-off circuit
- Check ECU for proper operation (rare)
- Replace faulty components
Related codes
Error P251F by Vehicle Brand
FAQ
What does the P251F code mean?
P251F is an OBD-II diagnostic trouble code that indicates: PTO Engine Shutdown Circuit High
What causes a P251F error code?
The most common causes of P251F include: Open or short circuit in the PTO engine shutdown circuit; Faulty PTO sensor/switch; Problems with wiring or connectors; ECU malfunction (rare).
How do I fix a P251F diagnostic trouble code?
To fix P251F: Check wiring and connectors for damage or corrosion. Check PTO sensor/switch for proper operation. Measure the voltage in the PTO engine cut-off circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P251F?
Do not drive — repair immediately
How much does it cost to fix P251F?
The estimated repair cost for P251F is $6–56. Actual cost depends on your vehicle, location, and labor rates.
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