Could sure use some help! I showed a 0161 code on my code reader after the Check Engine indicator came on. The code reads:
" HO2S Heater circuit Malfunction bank 2 Sensor 2".
This may be a silly question but does that indicate that the heater circuit in the sensor malfunctioned?
Talking to the tech at Lexus he said it's the Oxygen sensor past the Catalyic Converter and the connection for it is under the passenger seat. I found the sensor and sure enough it's wired through the floor and under the passenger seat. I may have misunderstood where he said it was because, it's located before the Cat. converter. I couldn't find a sensor after the cat. converter and before the mufflers.
Questions: I see three connectors under the seat, yellow, gray & white. Anyone know which one is the sensor? If anyone has a manual, it should indicate which one is the sensor. I assume one of them is the sensor connector. Also, there are four wires into the sensor: white, blue and 2 black. Can I assume the 2 black are the heater wires?
I have a GS300 with 33000 miles. When I asked the technicion about the code at such low miles and he sqaid it has more to do with time rather than miles. My warranty expired last August, 2004.
I'll await some help.
Thanks to all.
Dan