The sensor is so small....
But so costly to fix when it malfunctions.

Oops!
I mean replace.

Anonymous wrote:

Anonymous wrote:Yes, it happens if the pipes rust. The sensor is just screwed into the exhaust pipe and taking it off can be a disaster. If they didn’t damage the pipe you could try another shop but expect you may get the same result.

Thanks, I've got another appointment tomorrow morning with a dealer. We'll see.

Guy from Jim Coleman Toyota was able to remove the sensor, so I saved about $1,500.

Anonymous wrote:

Anonymous wrote:I just received a recall notice for something similar to what you are describing. look up air injection pumps and air switching valves special service campaign.

For what type of vehicle?

Lexus gx460

Anonymous wrote:I just received a recall notice for something similar to what you are describing. look up air injection pumps and air switching valves special service campaign.

For what type of vehicle?

I just received a recall notice for something similar to what you are describing. look up air injection pumps and air switching valves special service campaign.

Anonymous wrote:Yes, it happens if the pipes rust. The sensor is just screwed into the exhaust pipe and taking it off can be a disaster. If they didn’t damage the pipe you could try another shop but expect you may get the same result.

Thanks, I've got another appointment tomorrow morning with a dealer. We'll see.

Yes, it happens if the pipes rust. The sensor is just screwed into the exhaust pipe and taking it off can be a disaster. If they didn’t damage the pipe you could try another shop but expect you may get the same result.

I take the car (2008 Lexus ES350) to a local shop and they tell me the upstream a/f sensor needs replacing. They also recommend servicing the fuel injection system. Total cost about $600. I give them the go ahead. They call me about 90 minutes later and tell me the sensor has seized (the mechanic can't get the thing off) and now I need a new catalytic converter. Has anyone ever heard of such a thing? I can't believe a serious mechanic would have difficulty removing a sensor. I'm also now looking for another shop that do the work. Thanks.