I have a 2015 Lexus RX 350 with a check engine light, trac off, check AWD system coming up on my dash.
I am having trouble code P0393 - Camshaft position (CMP) sensor B circuit input high (bank 2).
Can anyone assist me with locating this sensor so that I can change it and hopefully get rid of these light on the dash.
Thanks in advance!

 

First check your battery health as those are almost random lights. Low voltage can cause many trouble lights and codes to appear when the root cause is a bad battery. So check it before assuming the camshaft position sensor is bad. Most chain Auto parts stores can check your battery.
Also check for rodent chewed wires under the engine cover.

This camshaft sensor replacement video is for a Toyota Sienna that has the same 3.5 V6 engine:

 

@Clutchless Thanks for the quick response. Yeah I did read about the battery/gas cap being an issue and I checked the battery with both a multimeter and my scan tool and it shows 13.72v when car running and 12.20 when car is off. BUT it does still have the original Lexus battery and I purchased the vehicle new in 2015. I will check for rodent chewed wires under the engine cover next. Also, I did watch that video yesterday and the guys do explain everything really well when replacing the part. I just did not know if the Toyota Sienna engine was the same as the Lexus RX350, but thank you for confirming that it is the same. I just cleared the code and will drive it and see if it returns. It may just be an old battery like you mentioned, but the voltage reads a healthy battery according to the numbers.

 

The battery is 9 years old and the voltage is on the very low end of acceptable. The amps are probably too low.
Replace it before doing any further work.

 

Agreed. Your battery is probably on the verge of failing.

 

@Clutchless @RX in NC Yeah I agree! I will start there, thanks for the feedback!

 

Hey guys! Good morning! So I went and purchased a new battery on Thursday, February 06, 2025. It’s been 7 days and all the lights have been off since. Hopefully it stays off, but it looks like a new battery did the trick! Figure I post this for anyone having similar issues. Thank you guys for your help!

 

Good deal on the repair. I was just getting ready to have you check the voltage while trying to start the engine. If it fell below 10 volt , I was going to say get a battery. But, never mind. Glad you got it fixed.