ccsimpreza

iTrader: (1)

Hi Guys,

Not sure about this one. Ive got a HKS full decat turbo back exhaust for my scoob, and only recently Ive seen the eml come on, which reports faulty o2 sensor.

Now, I can see the o2 sensor down behind the driver wheel, but I cant for the life of me see the other, should be near the TMIC shouldn't it? Looks like the exhaust has a blanking plate there to be honest.

Ive got it booked into the garage anyway, but is there any reason why this would suddenly throw up a code?

It is remapped by scooby clinic, not sure if they deleted the code via map or something and its come back?

I just want to understand what my cars doing!

Thanks guys.

yabbadoo4

iTrader: (8)

the front sensor is near the wheel yes. i think the other is in the middle section of exhaust. any other symptoms like rough idle or revs creeping up or down on idle? poor mpg and a rich smell from engine /exhaust are other signs as well. i replace mine 6 months ago was an easy job. i think you have to reset the ecu once fitted but the garage can advise you on that.

ccsimpreza

iTrader: (1)

It drives perfect, it doesn't smell especially rich. It does the occasional "pop" but I guess that was due to setup and having no cats.

MPG isnt great but its not shocking.

This is the thing, it drives and behaves completely normal.

yabbadoo4

iTrader: (8)

switch it off and see if it stays off. if it comes on again then investigate. im guessing you havent changed anything that would need a map tweek?

ccsimpreza

iTrader: (1)

Already cleared the code, came straight back.

Nope, nothings changed!

I was told that its due to decat by a non specialist Subaru garage and that makes sense, what doesnt is why its suddenly come on.

yabbadoo4

iTrader: (8)

but the decat would have been mapped in at map time? you could try unpluging it and plugging it back in as it may have come loose or a bad connection. its easy to get to, the plug is right beside the boost control solenoid. just trace the wire up from the 02 sensor. worth a try.

ccsimpreza

iTrader: (1)

Yeah checked all connections too, oh well, see what a new sensor does!

Thanks

yabbadoo4

iTrader: (8)

no prob, new sensor should sort anyway.