Troubleshooting Misfire and Bank 1 Sensor Errors

[Rico]

P0135 O2 sensor heating circuit
P0141 O2 sensor heating circuit
P0131 O2 sensor low voltage
P1133 HO2S switch from lean to rich - not enough times

Sounds like the upstream O2 sensor is not plugged in.

[whathasnt]

No, I haven't scanned while driving. I still need to get a scanner. Both O2 plugs are plugged in. I replaced the bank 1 sensor and just got done reinstalling the second after replacing the exhaust.

I was trying to check for vacuum leaks, but feel extremely stupid as I'm not sure where to be looking and had trouble finding a diagram. I bought some carb cleaner to try and find it, but no luck last night.

[whathasnt]

Thanks for the tip. I'll try that when I get home tonight.