So yesterday under heavy acceleration my CEL blinked on a few times maybe 3-4 times (It immediately turned off and stayed off). I took the car to autozone and had them pull the code and P1399 came up. I tried to look up the code online but I didn't see that code listed. I did a search and through another post I found that it means, "Manufacturer Control Ignition System Error." Anyone have any ideas on this, maybe a link with possible troubleshooting options? Thanks in advance.

 

after searchin around i came up with a misfire code..try checking ur spark plugs

 

right off all data

p1399 is a random misfire code and honda has reported for various models that this could be caused by clogged egr ports, in addition there is the possibility that the valve clearance spec may be out of range

 

Thanks for the info guys. One last question, when the check engine light blinks on a few times then turns off is it telling me there is a serious problem with the car or should I not be that concerned?

 

most misfire codes will cause the MIL to blink instead of stay on..everytime it misses the MIL will blink and goes off

 

Usually the bad blinking light stays blinking. But when it blinks, it's always bad. Check your plugs and go from there. Would not hurt to do a compression test while you at it.

 

hopefully you've pumping 91/92 octane also...

 

No EGR ports in these cars..

I just had this code also, changed my spark plugs which were the originals and at like a .70 gap and bam all better, car runs way better too now

 

Great point...

 

I typically use 93 but I did use 91 when the CEL came on but that shouldnt be a problem.

 

If you're having random misfires it's not good. If it's not your spark plugs that's the issue then your coil packs are going or are already bad.

The Ap1's occasionally had issues with coil packs failing. My coil packs caused random misfires and ended up putting a little hole in my headgasket. But then again, I was also pushing 18psi at the time.

 

Would this code also cause the knock sensor to foul up? P0325 is also being tossed out.

 

the knock sensor is setting because of the misfires. check your spark plugs. if they look ok, inspect your valve clearances and valve retainers/keepers while your at it. look at your coilpacks for signs of burning or overheating.