P251F

PTO Engine Shutdown Circuit High

Severity

⚠️ Medium

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$6–56 (est.)

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

P251E P2520 P2521