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lostrider, Ford Technician
Category: Ford
Satisfied Customers: 3075
Experience:  ASE Master Technician, Ford Senior Master Technician,Diesel certified, ASE Master, 22 yrs FORD exp.
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What does Code PO351 mean

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bill, what year and type of ford do we have?
Customer: replied 9 years ago.
2003 Expedition 5.4 engine
P0351 Through P0360 - Ignition Coil A through J Primary/Secondary Circuit MalfunctionEach ignition primary circuit is continuously monitored. The test fails when the PCM does not receive a valid IDM pulse signal from the ignition module (integrated in PCM).
  • Open or short in Ignition START/RUN circuit
  • Open coil driver circuit in harness
  • Coil driver circuit shorted to ground
  • Damaged coil
  • Damaged PCM
  • Coil driver circuit shorted to PWR
what it means is there is a cylinder #1 coil concern, check and make sure the ignition coil is plugged in, #1 is the front coil on the passenger side of the engine, if the coil is plugged in, then there could be a wiring or a Processor problem. hope this helps.
Customer: replied 9 years ago.
Is the front cylinder on the passenger side #1 #2#3#4 all on the passenger side?
yes , the passenger side is what they call bank 1, the coils are from front to rear, 1,2,3,4, the drivers side is bank 2, from front to rear is 5,6,7,8
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