Recently the CEL light came on in conjunction with the vsc, of course. So I pulled the code....P0138 (O2 Oxygen Sensor Circuit High Voltage (Bank1, Sensor2) and took the car to Pep Boys to have the sensor replaced. $400 later, the sensor was replaced, but the CEL turned on after driving about 10 miles. So I returned to Pep Boys for them to take a look. They ran their diagnostics and determined that 2 other o2 sensors now need to be replaced. They ordered the parts which should be ready in a week.
When I picked up the car I checked the code again. Same code... P0138.
It seems a little strange that 3 o2 sensors would fail within a week of one another.
If you guys have any thoughts, let me know.
Do you think their assessment is bogus or what?
BTW, I just read this: http://us.lexusownersclub.com/forums/topic/55589-diy-01-ls430-code-p0135-oxygen-sensor-bank-one-sensor-1/?p=419073&hl=paperclip&fromsearch=1#entry419073
I'll give it a shot ASAP
Thanks in advance,
Tom