Idle rough runing rough at idle

Unless you do your own work take to a reputable technician and have them re scan and change required sensor
the forum below may shed some light on your problem
rough idle stalling loss of power

your o2 sensor bank 1 is bad . you may want to replace it. It will probably solve your problem but make sure your maintainance is up to date fuel filters air filter plugs and wires. If this was helpful please leave good feed back

spark plugs injector cleaner have u been runing with low fuel pump may be on it way try fuel injector cleaner & fill tank 90 plus octane

And then it runs rough again? No codes? There are 4 things a car need: Fuel, air, compression, and spark. Have you done a tune up lately? Check for a vacuum leak

I always check the simple things first, and it has served me well. It could be clogged injectors, put a bottle or two of injector cleaner in your (full) gas tank. Could also be dirty air filter, or combination of the two. Check fuel filter too, I've seen those do a lot of weird things when they get clogged to the point of restricting fuel flow. Good luck

Here are the most common causes of idle surge, rough idle esp when cold, other symptoms include stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake

It sounds like your engine is gummed up. I recommend that you get two bottles of a fuel additive called seafoam and dump them into the gas tank. In no time, your engine will be purring again.

firstly you have to reduce idle srew,and cheak for any damage vaccum,cheak the feul filter for dirty for rough runing

This code is most likely not related to the problem, it sounds like you may have picked up some contaminated gasoline, maybe has water in it or other like dirt.

What car , and year and engine? What color smoke?