davidmitsusrock

so my service engine soon light came on and ive only owned my car for a week....

oil is full and clean.
antifreeze is also full and clean
full tank of gas
car sounds and runs smooth

any ideas?

02-Lancer-Es

iTrader: (21)

could just be that when u fueled up u didnt close gas door or cap right

coal

iTrader: (1)

Go to autozone and get it scanned.

hmsevo9mr

iTrader: (11)

What mods do you have? When I put in My TBE it came on and then I bought CEL fix of ebay for 15 bucks and it didn't come back on. Good luck bro.

ambystom01

iTrader: (7)

Do you have any mods?

Tweak3D

iTrader: (7)

it could be from the stock cat recall thing, i've seen a lot of lancer with that not knowing they can get it fixed for free. just get the code pulled and post it here, we can help more with that.

kungfugirl

iTrader: (4)

Are we supposed to take a shot in the dark here? Just scan it!

SLVROZ_03

iTrader: (10)

scan me plz!

tweakdsm

iTrader: (38)

like everyone says, scan it, for sure its something simple.

saiyanzzrage

iTrader: (11)

Christ, scan it

davidmitsusrock

i will find a place to scan it at tommorow my car is stock but i was going to put my sri in tommorow and sorry about the sloppy reply its cus im on a phone

davidmitsusrock

it was th o2 censor

Tech@SA573

iTrader: (3)

Do you know specifically what code it is? Like P0xxx? There's like 30+ different codes for different problems with O2 sensors.

davidmitsusrock

no i dont know it...question though...if i get a catback wont that replace the o2 sensor anyhow?

Tech@SA573

iTrader: (3)

Nope. There is no O2 sensor in the catback section of the exhaust. The two O2 sensors are in the header and catalytic converter. Even if you replace the header and catalytic converter with aftermarket versions, the sensors must be transferred to the aftermarket parts. The car needs the O2 sensors to run properly.

Did you have them clear the service engine soon light when they scanned it? Did the light come back on?