from my experience this week...

CEL goes on.. VSC and VSC/OFF is lit up

My car feels normal at non-idle rpm's.. at idle, it's a "little" rough. Sometimes the CEL blinks when it starts to feel a little "rougher" but never the car never died. The car only feels like this at idle, at a red light, or any time the rpm's kicks down low.

I go to autozone and pull these codes:

P1346 VVT Sensor Rang/Performance Problem (Bank 1)
P1349 VVT System Malfunction (Bank 1)
P0300 Random Misfire Detected








UPDATE:

This issue didn't turn out to be bad gas after all. After idling bad off and on all week I took it to my mechanic. He replaced:

CAM CONTROL SOLENOID
CAM CONTROL SENSOR

Take it for what it's worth.. but it idles great now and doesn't pull a CEL.

tried cleaning the throttle body (was a little dirty).. reset ecu.. but it lit up after a while and felt the same at idle.

I found out what it was today after a week.

Anyone want to guess what the problem was?

 

Bad gas?

 

Bad plug??

 

damn.. that was quick.. hehe.. it was bad gas..

filled up this morning and when I got home it was idling great, actually better than before it gave me a CEL. (prob from cleaning the tb) Reset the ecu and it hasn't came back on like it did before. man.. never had bad gas before.. it was bugging me out.

so if anyone get's these mysterious codes... try new gas.

 

Must of been that Burrito that I had for lunch

 

thank u so much i just had my lights come on and i was driving myself crazy. What if it is not just simply bad gas any other suggestions?

 

UPDATE:

This issue didn't turn out to be bad gas after all. After idling bad off and on all week I took it to my mechanic. He replaced:

CAM CONTROL SOLENOID
CAM CONTROL SENSOR

Take it for what it's worth.. but it idles great now and doesn't pull a CEL.

 

If you don't mind me asking, are these expensive items to replace? How did your mechanic know to replace them?

 

The part was about $100. Labor was $270 but they also took care of a rattling issue (the alignment shop left a socket in my suspension!) and replaced a broken coilpack bolt that broke off when I was replacing the sparkplugs. Since you are in Illinois.. if you ever need work on a Lexus.. he is great. He knew exactly what the problem was after giving him the symptoms. Previously he was a Master Tech at McGrath that started his own shop so he has pretty extensive knowledge on Lexus and makes me feel good that he owns 3 of them himself.

 

no matter what always use the same type of gas, and dont fill up in cheap gas stations

 

i know this is an old thread, but while driving tonite, i had the same thing, pulled the same 2 codes. i hope this thread helps...

Where are these located?


CAM CONTROL SOLENOID
CAM CONTROL SENSOR

TIA

 

What kind of Gas did you pump or what grade?..Is it recommended to use 91 or higher if any?...

 

92 octane chev, i read the OP's comments, its a possibility, but ive filled at the same station several times before, so i dont think its bad gas.

im gonna take a look today at the cam position sensors. i heard that coudl be the issue as vvt constantly adjusts. probably check timing as well, im not due for a tbelt change for at least 20,000 miles, but who knows, maybe just bad luck.