I have a 2001 jeep grand cherokee and it giving me four code p1391 p0351 p0352 p0353 i will like to know the problem please

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.

Do not know what p0352 is but p0351 is ignition coil#1 primary circiut ( peak primary circuit current not achieved with maximum dwell time.

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

I would check Cam Position Sensor as is directly related with ignition. Power loss is due to the ECU going on "limp mode" to prevent further damage.
I hope this helps!

This must be a "one coil per plug" setup.PO351,352,353 are codes for coil A,B,C in that order.(I'm guessing cylinders 1,2,3?)Clear the codes,mark the suspect coils,and swap them to different cylinders,and see if new codes(different numbers) come up.

Kevin, can you give me a little more to work with? I would like year, make and model of your vehicle along with any other symtoms you may have experienced. Please get back to me with this information, and don't start replacing parts that you may not need. Waiting on your response.

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

Check the fire at the spark plug end of the coil wires. Sounds to me like you have bad coils or coil wires.