slawless

Symptoms: Rough idle, VSC, VSC OFF and ECL lights lit
Codes:
P0013 OBD-II Trouble Code: B Camshaft Position - Open or Short in Oil Control Valve (OCV) (Bank 1)
P0133 Oxygen Sensor Circuit Slow Response (Bank1, Sensor1)What I have done:
1) Cleared codes. Problem returned in less than 10 miles
--This is what everyone recommends trying first.
2) Replaced the camshaft oil control valve. Problem returned in less than 10 miles
--It was easy enough to do.
3) Traced the wires to the ECU. No fault found
--Opened the conduit and bent, twisted and pull them. the connection appeared solid.

I think the O2 sensor code could be caused my the malfunctioning exhaust cam timing. So I decided to approach the oil valve first.

At this point people recommend replacing the ECU. So at this point I am admitting defeat and taking it to Lexus. Perhaps I was going down the wrong path.

Does anyone have any experience with this? My appointment is not till Thursday. So, I still have time to try a few suggestions.

I will let everyone know if I get an answer.

Thanks.

Bgw70

Did you jump timing?
how many miles are on this timing belt?

DshngDaryl

Here are some steps you can follow to try and troubleshoot the problem
http://techinfo.toyota.com/t3Portal/...=1473185948919

slawless

Thanks for the info.

The belt was replaced last year.

Bgw70

I have the Lexus manuals and could give you the checkout procedure for the codes, just not tonight...I guess you are heading to the dealer in the morning but if you need some information from the manuals, let me know.

Bgw70

What at did the dealers say?

slawless

Follow up:
I replaced the oil control valve (easy to do, $90) but it made no difference. I followed the wires back to the ECU. The connection was solid. The next step recommended was replace the ECU. That would be expensive and I don't know if any coding in involved. So I took it to Lexus. Lexus said it was the O2 sensor. They replaced it. So far so good. The car hasn't been driven a lot, but enough that the lights would have come on by now.

I was looking down the wrong path. I thought the malfunctioning exhaust camshaft would cause the slow response of the O2 sensor. Apparently it was the opposite way around.

Hope this helps someone else.

Bgw70

Glad you have the problem corrected but I am sorry I did not provide more help :-(
i think the P0013 code messed me up and we should have focused more on the P0133 code.
For me and others who read this, focus on simple first and remember, any O2 sensor is going to go bad from age and mileage...they all need to be replaced...think about the temps they live in and it's an electronic sensor.

Coleroad

for some reason in this car sensor 1 bank 2 seams to be the first one to go bad. It was on mine, and I have read many others on here with the same.