97 240sx kouki idle problems and error codes please help

[ToolMaker240]

here is the problem. when i start the car from a cold start it idles ok for the first few minutes, then the idle speed starts to drop quite a bit. If I give it any throttle when the motor returns to idle speed it will drop in revs again and nearly stall. this eventually worsens until the motor stalls as soon as throttle is released.

I've checked as many vacuum lines as i can without dissasembly of the intake manifold. I also replaced the o2 sensor in the manifold, the one before the cat is stock i believe. this was before i had access to an obd2 code reader, hooked it up today and the codes and definitions according to the reader (actron pocket scan) are as fallows.

p0505 idle control system malfunction p1441 (according to trouble codes.net) vacuum cut valve bypass valve p0443 evap emissions control system valve c fault p0135 02 sensor heater circuit malfunction bank 1 sensor 1p0141 02 sensor heater circuit malfunction bank 1 sensor 2p0446 evap emissions control system vent circuit malfunctionp1105 (according to trouble codes.net) MAP/BARO switch/solenoid valve

wtf is an 02 sensor heater could someone please explain some of this to me i am by no means a mechanic but definately a mechanicaly enclined individual. anyone who as the time to reply would be greatly appreciated.

the car is a bone stock 97 auto 240sx aside from the intake of course.thank you for your time.

[ToolMaker240]

anyone?

[Asmar]

Thats a lot of codes... I'll try to look up the problem. I think a friend of mines has something kind of similar with his S13... Kind of...

[ToolMaker240]

found the problem it was all caused by a blown fuse under the dash (if anyone cares)

[KiMbRoZz]

I care

[biglaz007]

what fuse was it by the way im having similar issues with my car