simplecar

so i know, i’m very aware that i have been comparing my 1st gen to the 2nd gen i have. but i don’t understand, why doesn’t the autozone tools detect my check engine code on my 2nd gen rx, but the 1st gen rx gets detected just fine... i don’t understand

mnewxcv

Any OBDII scantool should be able to scan check engine fault codes for the RX 2nd gen. Subcodes and codes in other systems need special toyota software. There is nothing unique about the rx 2nd gen in that sense; all toyotas and lexus' of that era will behave this way.

simplecar

maybe it’s autozone’s fault i guess.

DennisMik

The connector for the OBD reader MUST HAVE 12 volts on pin 16 to tell the reader that it is plugged into a car. There is a fuse for this - it is called OBD and it is a 7.5 amp fuse.

The fuse is located in the fuse block under the dash approximately above the driver's knee. Remove the caover and read the labels. The OBD fuse is in the left column about 3/4 of the way down.

iMSQ

No. It's not their fault. They can read codes for engine errors only (mostly), but your car has many other electronic blocks that could have an error (brakes, airbags, etc.).
PS: I had a problem with ABS, and specialized mechanic was able to read the error code only (and dealer as well )