05 Caravan with no spark on 2&5.

Question

I have a 2005 Grand Caravan 3.3 engine. I get a fail code of P2305 (secondary coil b low ionization), no spark on cylinder 2&5. I have changed the coil (3 times), the PCM (twice), replaced the plugs and wires and replaced the ASD relay. I've checked the continuity from the PCM to the coil (everything looks good). Engine has good compression. When this first happened it started missing then after parking at the store it ran good for about a half hour. That's when I changed the coil the first time and it ran good for about a week, then did it again and has been doing it ever since. I'm at a loss as to what to do next. Any help would be greatly appreciated.

Answer 1

P2305 Ignition coil #2 secondary circuit- insufficient ionization

Some of the cause for this are sparkplugs,ignition wire,coil operation,coil circuit open,coil circuit shorted to ground,PCM,ignition coil,To narrow this down measure the circuit of the coil control during a test drive, If the problem ends up being the PCM make sure you have the new software update number 18-018-04