Air Fuel Ration Sensonr

[MilitoGFC]

I've been getting a code for lean condition. I had the sensors tested and the air fuel ratio sensor is reading out of range.


1. Can someone show me where is it located on a stock FRS?


2. I'm running HKS Equal length headers. Is this the sensor on the picture attached???

[DarkPira7e]

That is one of the two oxygen sensors, yes.

[MilitoGFC]

Does the car have Two O2 sensors and an air fuel ratio sensor or just Two O2 sensors?

[Spuds]

And it's located in about the same place on a stock FRS. The first one is right before the cat.

[PetrolioBenzina]

One of the few times I'm glad I live in OR where road salt is not used.

[DarkPira7e]

Originally Posted by MilitoGFC

Does the car have Two O2 sensors and an air fuel ratio sensor or just Two O2 sensors?

They are synonymous. An oyxgen sensor measures your air/fuel ratio.

[BirdTRD]

That crack doesn't look good. If it's leaking exhaust, that'll cause your AFR to be off.

[Grady]

Originally Posted by BirdTRD

That crack doesn't look good. If it's leaking exhaust, that'll cause your AFR to be off.

Good eye!

[NARFALICIOUS]

Originally Posted by DarkPira7e

They are synonymous. An oyxgen sensor measures your air/fuel ratio.

An "oxygen sensor" and "Air/fuel Ratio" do perform the same needed function but are different. In Toyotas, typically the primary Sensor (Before cat) is an A/F ratio type sensor, and the Secondary (Post cat) is the traditional Oxygen sensor type. They both determine air fuel ratio, the main difference is how the voltage is read by the ECU.

[extrashaky]