Codes p0340 p0353 p0352 p0351 p1391

p0351,p0352,p0353 and p0354. It won't start because you have four cylinders not firing . P0351 - Ignition Coil A Primary/Secondary Circuit Description: See the description for DTC P0350. Possible Causes: See the possible causes for DTC P0350. Diagnostic Aids: See the diagnostic aids for DTC P0350. Application Key On Engine Off Key On Engine Running Continuous Memory Coil-on-plug (COP) ignition testing - GO to Pinpoint Test JF . GO to Pinpoint Test JF . Coil pack ignition testing - GO to Pinpoint Test JE . GO to Pinpoint Test JE .
When you see these codes , it's time to worry . These ford coil on plug system's can fry the transistors that control the coil firing . New computer or reman at ford $ 800.00 buck's then it needs to be programmed (dealer) What engine ? 3.0 v-6
This happens when the spark plug's are neglected , gap get's to wide , make's coil's over heat an break down , spark goes through the primary wire to the computer . Your best bet , take it to a qualified repair shop.

All those codes are the same BASIC code just for different coil pack secondary. You need to check the wiring from the coil packs and make sure they are all grounded properly. Corrosion or loose connection at a bus terminal can cause this. Here is a link: P0352 OBD II Trouble Code Ignition Coil Primary Secondary Circuit...

Look at fuel trim on a professional scanner

You still have the same codes for the same cylinder
misfires,IF the codes are correct

The misfires could come from valve issues,the valves themselves
or the variable cam actuators if that applies,or from fuel issues,but
not as likely on all three cyl on same bank

You need to do a cylinder leak down test on all cylinders--to eliminate mechanical issues

Then a cylinder contribution test electrically with scope software

Then scope the timing events,the cam advance events,the crank
position, all layered on the same screen & see if they line
up where they belong.

If the cams are not the issue, then your left with a serious vacuum
leak in the intake on one bank.

What I'm saying, is you have one bank with misfires apparently
not now from the ignition since the coils were replaced

codes p351-2-3 refer to ignition coil A -B -C primary /secondary-circuit malfunction==causes--wiring--ignition coil --ECM. Causes are the same for all three.. As the ECM is common to all three, producing the same code I would be incline to replace the ECM

For some reason you question has been duplicated several times, so I will answer this one.
Code 1391 may be a problem with the ABS system, the other three codes are concerning the first 3 coils. Your engine has direct spark so each cylinder has its own coil.
I would clear the codes and see which ones come back after a test drive. If the three coil codes come back the coils would need to be tested.

P1391 - Not a valid obd code.
B1391 - Oil Level Switch Circuit Failure
C1391 - Not a valid obd code.
U1391 - Not a valid obd code.
Its possible you may have misread this code. If it is B1391 that would be the only code with 1391 for your vehicle.

P0351 - Ignition Coil A Primary / Secondary Circuit Malfunction. The ignition signal from the Powertrain Control Module or Electronic Control Module is sent to and amplified by the power transistor. The power transistor turns ON and OFF the ignition coil primary circuit. This ON/OFF operation induces the proper high voltage in the coil secondary circuit.

Possible Causes:
- Open or short in the ignition coil circuit
- Ignition coil circuit shorted to ground
- Ignition coil connector
- Damaged ignition coil
- Damaged PCM

P0352 - Ignition Coil B Primary / Secondary Circuit Malfunction.
Same repair info as P0351.

P0353 - Ignition Coil C Primary / Secondary Circuit Malfunction.
Same repair info as P0351



Solutions:
- If damage, repair ignition coil circuit
- Replaced ignition coil
- Replaced PCM or ECM

The codes you mention 301-302-303 are all misfire in the respective cylinders. you should replace the coil, while you are at it also verify the condition od the sparkplugs.

p0351- ignition coil A primary or secondary fault
p0352- ,, ,,,,,, ,,,,, B ,,,,, ,,,,,,, ,,,,,,,,,,,,, ,,,,,
p0353 - ,,,,,,,,,,,,, C,,,,,,,,,,,,,, ,,,, .,,,,,,,,,,,,,,,,
you may have a problem with yuor ingnition system

Have your ignition coils replaced

P0351 Ignition Coil 1 Control Circuit

P0352 Ignition Coil 2 Control Circuit

P0353 Ignition Coil 3 Control Circuit 1 Control Circuit