obd code p0141

[dcswingle]

O2 sensor forward of Catalitic Converter preheat. Replaced sensor. 12V at connector for heater, however no bias voltage at connector(analog meter). Wiring? PCM? DCS

[rodeo02]

P0141 = O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2) / after cat sensor. Sounds like you are on the right track. I dunno at what point the 12v circuit to the o2 sensor(s) heater goes live, but I would suspect a dead sensor, broken wire or corroded connector. G/luck
Joel

[kegard]

My '96 Rodeo 3.2 just failed it's emissions test with the same p0141 error code. Is it easy to replace this sensor? Any instructions?

Also my check engine light isn't working. I don't even know where to begin on that one.

TIA!