dtc p2305 and p1697

Hi you all there

I have a neon 2004 with 36k on it and have this codes. p2305 and p1697.The car starts missing while driving and working on two cylinders.Have already change ign. coil but didn't fix problem.

any help please.

nel.

Are you sure the codes are correct? The P2305 is a GM code. Have you changed the plugs as well and inspected the wires?

Are you sure the codes are correct? The P2305 is a GM code. Have you changed the plugs as well and inspected the wires?

Hi, yes these are the codes p2305 (ignition coil B secondary circuit and p1697 mfr ctrlled computer output).I have chaged plugs and wires but doesn't change.
thanks,
nel

Is it possible you have a bad PCM then?

Is it possible you have a bad PCM then?
Hi again and thanks for the hints,

Is there another way to program a new pcm without the drb scantool.
thanks,nel

The neons PCM's are not programmable. Do you mean reset the PCM?

The neons PCM's are not programmable. Do you mean reset the PCM?
If i will ordered a new one,does it come ready to install.Do i need to just plug in ecm and start the car.I am helping a friend with this car.I am specilize on vw.

thanks,

nel

Yes, they are plug and play. I'd try to get one out of a junkyard first, before paying the high price from the dealer.

Yes, they are plug and play. I'd try to get one out of a junkyard first, before paying the high price from the dealer.

Ok thats what i going for right now

thanks again.

nel

p2305 is "ignition coil #2 secondary circuit-insufficient ionization , this couild be caused by a bad coil , plug,coil wire, shorted or open coil driver circuit, pcm, or asd output
p1697 (a very rare code) is "emr mileage not stored", usaully caused by faulty pcm (which both codes have in common), you could also try and update the mileage and retest the SRI memory.

if both these codes become active at the same time after being cleared, i would bet that your PCM will have to be replaced

hope this helps you out a little bit

one other thing, i would not reccomend a junk yard pcm as, once the VIN is burnt into it (which you will have to do throiugh the SKIM module) it's only good for that car, so you cannot use a used pcm, it won't work with your car