Check engine light code 0441

sounds like dirty O 2 sensor try fuel system cleaner in your fuel tank get one that cleans that part.

i would suggest checking fuel pressure and fuel filter could have little dirt or something clogging fuel and engine light will stay on due to too rich or too lean of fuel/air mixture

code p0441 refers to evaporative emission EVAP system-incorrect flow detected===causes hose connections--intake leak---EVAP canister purge valve
Po144 refers to the same fault and causes
Po446 refers to EVAP system--vent control-circuit malfunction===causes --wiring---EVAP canister purge valve---ECM In all cases codes the canister purge valve gets a mention and then the ECM. I would take it back and ask that the canister purge valve be changed or even ask for a new canister as there are occasions when filling the tank to the filler hole will induce fuel into the canister causing it to malfunction.

These use seperate coil packs for each cyl. and I think you have a bad coil pack on that cyl

If you can get the actual codes we can better advise you.

need to start with do you have any obd code with key turned on
caddy is more complex system than most , check fully charged battery, and not a jump start, and battery is in very good condition .disconnecting battery would only clear codes leaving you with nothing to go on hopes this is some help to you.

IMHO,if they just charged me $700. i'd drop it off in morning & talk to the service manager/director
car needs to have fuel press tested ect.which im sure were done for the price you paid
but its not fixed!!!
good luck

Check engine light, means your car computer pick up a code, most auto parts or autozone will pull codes, get back with us with the trouble code number. so we can help you diag. your trouble code, more the likely it pick up a cylinder miss fire, nothing a tune-up won't fix, from what your saying, you should be alright for a few weeks till you can have it check out, the system will go into limp mode and will not stall or die on you.

well the first thing you should do is check the compression in cyl number four the compression should be within 5-8 of the nearest cyl if you see a significant diffrence in pressure you have a week cylinder...also is there any discoloration on the number 4 spark plug a coolant soaked or fuel soaked spark plug can lead u in the right direction..lastly i would take a look at the exact fuel pressure you will need a gauge and take a look low or high fuel pressure can cause a misfire....keep in mind that a clogged catylitic convertor can also cause a misfire do to accesive back pressure give your convertor a tap and see if its rattling ....hopefully this can lead u in the right direction ...good luck

im a honda mech. if they had any sense they would call honda tech line and try to figure thi problem out i would replace thr trans again or have the connectors check if the tech lowered the trans with the wiring still connected he probably pulled some wires out of some of the connectors