Firstly hi guys new to the forum just recently purchased an 06 wrx with 130k on it. Been great for 600kms? Then last night engine light came on no driveability change, was just cruising at 80. Im guesing its either going to be from the 3' turbo back or the new sound system playing with voltage? Has anyone got an OBD2 that they could use to tell me what the codes are?
thanks in advance.

Pretty cheap to do it - via the Torque App for Android with the OBD2 dongle.

Mini Auto CAR ELM327 V1 5 OBD2 Odbii Bluetooth CAN Scanner Tool Torque Android | eBay

https://play.google.com/store/apps/d...l.torque&hl=en

Otherwise you can pick up a pretty basic scan tool for $50 odd to plug in and pull the code.

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Should have bought an STI

I have purchased one but I'm a bit anxious driving around with the cel light until it arrives mid next week.

Fair enough mate.

Purely guessing, but if you have a new exhaust system in, I'm gonna take a stab & say it's something to do with your rear O2 sensor. If that's the case, don't worry too much. If that turns out to be the case, don't worry about a $$$ubaru geniune one, you can get a replacement Bosch for a lot cheaper.

When it's not working you may notice a drop in fuel economy though when cruising for long periods.

Code # P0420

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Should have bought an STI

Exhaust has been there since I got the car but could be 02 sensor

Are you a RAC member? Most of the Patrol guys have scan tools..

Jim and Jarrod at Bluestar mobile Wangara, just up the road from you.

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Bye bye betty blue. Hello F6.

Well i feel like an idiot but i un-did the fuel cap and tightend it just till first click and guss what? Engine light gone. Thanks for all the help though