Need HELP

[ram air ws6]

What should i do. My car is giving me these 6 codes:

1. P0134 02S Circuit Bank 1 Sensor 1, No activity detected

2. P0300 Random/Multiple Cycle, Misfire detected

3. P0135 02S Heater Circuit Bank 1 Sensor 1 Malfunction

4. P0140 02S Circuit Bank 1 Sensor 2 No activity detected

5. P1133 H02S Insufficient switching Bank 1 sensor 1

6. P0102 Mass Air Flow Circuit, Low input

Is there anything i can buy to install in my car that could get rid of most of these codes? If i bought an upgraded mass air flow sensor could that get rid of code number 6? Any help is appreciated. thank you
Danny

[2001NBMZ28]

Damn, hit the jackpot I guess. Most of those codes are related to the precat 02 sensor on the drivers side...I'd start there. For #6 check the ENG SEN fuse too. If you're stock check them out individually at gearchatter.com

[bills98ta]

Yep, there are four O2 sensors... you need to check the top drivers side on the exhaust manifold.

[ram air ws6]

Thanks for the advice. I'll check on that right away and tell you what i find.