check engine light came on again did the keypress....got a 1-2-2-1-5-5 im not sure what i should be lookin for out of all those #'s maybe someone knows what they mean??

thanks guys

21 is the code for the upstream o2 sensor

looks like

12 Power Disconnect in last 50 key turns
21 Upstream HO2S stays at center
55 End of Codes


Refer here for more info http://www.2gnt.com/nuke/modules.php?name=Sections&op=viewarticle&artid=8

Originally posted by gc8dc95
looks like 12 Power Disconnect in last 50 key turns 21 Upstream HO2S stays at center 55 End of Codes Refer here for more info http://www.2gnt.com/nuke/modules.php?name=Sections&op=viewarticle&artid=8

Im new with the car but what does 12 power disconnect in last 50 key turns mean?? And will this Upstream H02S effect my car in anyway that i need to get this replaced?...

thanks guys

Originally posted by gc8dc95
looks like 12 Power Disconnect in last 50 key turns 21 Upstream HO2S stays at center 55 End of Codes Refer here for more info http://www.2gnt.com/nuke/modules.php?name=Sections&op=viewarticle&artid=8

Now do i need to replace this Upstream HO2S sensor or can i let it go without it effecting my car??

Originally posted by 97RSEclipse23
Now do i need to replace this Upstream HO2S sensor or can i let it go without it effecting my car??

Ignore 12 and 55. Those are always there.

IF you don't replace the O2 sensor, the ECU will switch to a safety furl map which is rich as fuck to protect the engine. Your gas mileage will drop considerably and you'll get soot all over the ass of your car.

Replace the sensor. Some people have had issues with aftermarket O2 sensors from Autozone, but if you're tight on money, it should get you down the road. They're about $125 or so and you can replace it yourself wihtout too much trouble. If you look down the exhaust pipe from over by the power steering pump, it will be the stubby guy with wires attached sticking out the side of the down pipe.

Have at it!

www.oxygensensors.com - about $60.00

thanks alot guys...:)