have a eg with a jdm type r motor. I threw a cel tonight while driving normal on the freeway like 65-70 mph. All of a sudden a CEL comes on and i drive off to 7-11 to buy a paper clip. I checked it and i think i am throwing a CEL 1.....so i dont know whats up..I swapped in a Toda Header and a Toda Program ecu the day before. Is it the ecu or header? I never threw a cel with the stock JDM ITR ecu. Also, i turned back on my car, the cel is gone. I gun it...and it doesnt pull as hard and idont think i have vtec.

1 O2A - Oxygen sensor #1

what does that mean?

 

im guessing its the ecu not reading that your o2 sensor is in or something. it is in right?

 

the o2 sensor is in the 02 bung

 

Swap back in the ITR ecu to see if it behaves the same way. Stupid question, but you remembered to plug it back in, right?

 

yes, its plugged back in. What does that 02 CEL mean? Like what about the 02 sensor?

 

its reading that its bad

 

OBD 1 can be kind of vague. That code could basically mean the O2 isn't sending any signal... it's reading too lean or too rich, not switching properly or fast enough, or the heater may have failed. Actually, I don't know if there's a seperate code in the OBD 1 system for O2 heaters or not.

 

is it safe to drive around with that cel?

 

yes but it will prob run like **** and u will get crappy gas mileage

 

but, when i turn back on the car, the cel is not there??? only if i plug in the pin...

 

yea that means your still throwing a cel. if there werent any then nothing would happen when u try to check it

 

thanks, imma just go to the shop that did my swap and see whats up.