richie99

Have had the check engine light come on a few times intermitently.

Just read the code using an online guide. And it reads o2 sensor.

What next?

Is this part of the MAF or is it a totaly different sensor? If so where is it located?

The car is a 95 wrx wagon (import)

Rich

R5_GTT_Steve

iTrader: (7)

o2 sensor is the lamda aint it?

richie99

Yes of course it is.

Sorry for being a mong.

Expect more stupid questions from me as time goes by

Glowplug

iTrader: (8)

O2/lambda is located in the drivers side exhaust manifold/header, laying on your back under the front (drivers side) you will plainly see the sensor

If your needing a new one then the Bosch LS02 is the job

edit: Don't be tempted (as i and others have been) by the ebay universal jobbies, mine lasted less than 100 miles

Spot the difference:

richie99

After closer inspection my sensor doesnt have two black wires and one white one.

It has a long heatsheilded wire that goes to a connector with one black and one red and green wire.

Does anyone know the part number for this?

Glowplug

iTrader: (8)

You sure your looking at the lambda in the exhaust manifold and not the EGT sensor in the down pipe

richie99

Could be, I will go double check.

richie99

Yes I was looking at the wrong thing.

However, my sensor has 1 black wire, 1 white and 1 red.

Spoke to the guy who supplied the one I got, he says that my car must be fitted with a titanium manifold??

Glowplug

iTrader: (8)

That's ok, the black is the signal and that goes to the black on the sensor. The red and white are the heater + and -, it does not matter which way round you wire these two.

As a quick check, if you trace the loom back to the connector in the engine bay, the signal wire will/should have a gold/bronze coloured tip

Dno what he meant by that