MOZ87

I've just come back from the AE. They ran another scan, same fault code as yesterday being (p2195) oxygen (a/f) sensor signal stuck rich - bank 1 sensor 1. On the graph itit shows sensor one flat lining but sensor 2 seems to be working fine. They have also checked the battery sensor switch and couldn't find an issue with that. Looks like I will definitely have to replace the front sensor in order to stop the warning lights appearing on the dash. They have cleared the codes again but it won't be long till they appear again (usually within 15kms of driving).

The auto electrician found the fault code relating to bank 1 o2 sensor. I will be taking the car back today and getting him to check the brake light sensor which a few people have mentioned on the forum. Seems suss that the lights only come on when I'm braking.

Well I've spoken to soon. Check vsc warning lights have come back on within 20kms of driving. I guess I'll have to get the o2 sensor replaced at a cost of $300 + labour. If that's even what is causing the issue?

Well I've spoken to soon. Check vsc warning lights have come back on within 20kms of driving. I guess I'll have to get the o2 sensor replaced at a cost of $300 + labour. If that's even what is causing the issue?

What is the difference between the two Shell vpower and Bp ultimate aren't they both 98 octane? Or is Bp aa better quality fuel.

Hi all,

So I decided to take my car up the road from work to an auto electrician. He ran a scan and determined the cause was from an o2 sensor. He asked me what type of fuel I had been running (I run normal unleaded) then he told me I should only be running premium as the o2 sensors are quite sensitive and any crap fuel will usually set the warning lights off. $132 later I've filled up my car with premium fuel (shell vpower) and I'll see how I go. Hopefully that's all it was. My husband laughed when I told him - he's always getting up me for using unleaded! If it turns out that the fuel doesn't fix the problem it will cost me $318 for a new front o2 sensor. Fingers ccrossed I won't have to replace it.

Thanks everyone for your input on the issue. I'm still not sure if I should take the car to an auto electrician rather than a mechanic or bite the bullet and take it to Lexus.

Damn I was hoping I could avoid taking my car to Lexus. Being a female I have a fear of being ripped off! Did they charge to do a diagnostics also?

Yes that is exactly what happened. I braked at the end of the street and the lights came on. I have reset the computer a few times and within a few k's and braking it just comes back on. What did you end up doing to fix the lproblem?

Yes that is exactly what happened. I braked at the end of the street and the lights came on. I have reset the computer a few times and within a few k's and braking it just comes back on. What did you end up doing to fix the lproblem?

Hi everyone,

I was driving along yesterday and the "check vsc" warning light appeared on my dash as well as the engine and traction light. Has anyone experience this and can shed some light on how to fix and the cost of it. I have read some related posts on Lexus forums but none of them had a conclusion as to what caused the problem and the fix. Some say it was a problem with the fuel cap others say it had to do with cylinders misfiring (which I know isn't the case). Looking at the owner manual it seems it has to do with the throttle body. Any info would be much appreciated! :)

P.s I have already done the reset by disconnecting the battery for half an hour. The warning lights went away but within a few k's of driving they appeared again.