I have had an intermittent CEL on my Sienna the last several months. It comes and goes, and I have twice now poured in a dose of techron (thinking it might be a second catalytic converter, my mechanic fixed one already and told me the other one might go at any time). Anyways, I'm thinking I would like to see exactly what the code is. I have read here that some use bluetooth enabled OBD scanners, like this one https://www.amazon.com/Veepeak-Scan...
=1-2&keywords=obd2+bluetooth+adapter, and an app like Torque Pro.
My questions: would this give me codes for both my cars? EDIT: I looked at the VeePeak page and they said it does work with cars sold in America from 1996 onward, so I should be good.
My mechanic warned me against the scanners that they use at AZ or pepboys, saying the information they gave was not very accurate. Is this setup any better?
I know that some code readers also will give oil & coolant temps. That might be neat to have, but what other benefit would I get from spending 100 bucks for one of these scanners?