so my engine management light came on this morning on the way to work, the car drives no differently and idles/sounds/boosts fine.

any ideas?

its a hawk sti 2007

 

Obvious answer is to get any DTC codes read

 

will take her over to thwaites next week, just strange how it feels no different at all

 

does it still have the TGV's and emissions stuff fitted as could be to do with that

 

There are many DTC's that will not cause any perceived difference. The front Llamba sensor/ sensor heater failure DTC's (A/F sensor ) being a few.(it does reduce the mpg tho' over time)

 

not sure mate, how would i tell?

i would have a guess and say no as it has a built engine/full de-cat etc etc

 

my prodrive bug sti did this ,car drove perfect but engine light kept coming on ,changed plugs,coilpacks ,neutral position switch but after every attempt the light would come back on after a few days,it drove me mad because the engine was was running great,unfortunately i never found out what caused it as the car was written off

 

My bugeye had this but it was something like the cam position sensor (That could be completly wrong by the way but it was something like that). I got the car off my bro , he always knew about it but never bothered as it made no difference and went away for a while at a time. But my mechanic worried if light would come on and I'd just ignore it thinking it was the old fault when it could be something more serious.
It was an absolute **** to fix aparently. Yours could be anything mind you.

 

Mine has come on few weeks ago drives exactly the same ...changed spark plugs/coil etc ...still same
had compression test and it’s failed on cylinder 2 low compression .?!...Think they mot failure now too...hopefully looking at it getting sorted soon

 

You not got a friend that has a reader or a kkl cable? Either will work to show you the codes

What's an mot failure? Low compression? They can't tell that and they don't test compression either. If your talking eml, depends on the year afair

 

No the light is a mot failure I thought ?!?

 

My light comes back on after about 1min after I reset clear codes

 

Post 2003 petrol vehicle is a fail.
Post 2008 diesel vehicle is a fail.

 

spoke to thwaites will be going over maybe tomorrow afternoon

 

haven't you got yourself a bluetooth or wifi OBD reader for your phone ?? ,, easy just to see what the issue is without needing to pay someone

 

No mate never given it a thought to be honest. Is there a subaru app then that tells you the issues?

 

Get a elm 327 off ebay and get dash command in app store

 

there are a few different apps ,, they all do similar things,,, read fault codes and they also can show you loads of gauges ,,, so you can either use it like I do just as fault code tool ,,,, or you can set it up to show you your gauges on a display like a ipad or hooked up to your stereo screen

very clever bits of kit really and can save quite a few quid reading fault codes as we all know how much garages charge for this simple process

 

all sorted now thanks guys, went over to thwaites and they plugged their laptop in and the only fault showing was the speed signal sensor so the ecu was reset and its now gone off and all's fine

thanks guys