I am getting trouble codes p0301 and p 1684 for my car. Lately when starting up it feels like my car wants to stall out but doesnt. the rpm goes way low and then goes back to normal sometimes it shakes the car.
Your 301 code is misfire on # 1cylinder this a generic
code, the1684 code is factory code call your dealer
they will tell you watt that code is
It seems like P1684 is a com problem with the modules. As far as your cyl. #1 misfire try switching the coil, plug and see if the problem follows to the cyl. you swapped plug and coil with, this will help issolate the cause. Also look for oil accumulation in the plug hole, cracked coil, arcking through the plug boot.
Battery Has Been Disconnected
Possible Causes:
Quick Learn procedure was performed with scan tool.TCM battery direct (B+) circuit is open or disconnected.TCM power ground circuit is open.PCM/TCM was disconnected or it has been replaced.If you explain what you have been doing to your vehicle to get this code,it will make it easier to trouble shoot.
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