code 21 how to fix?????
#1
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code 21 how to fix?????
I just pulled the code for my check light and i have code 21 saying that i have a heater or main oxygen sensor. i dont fully under stand what this means and how to fix it any help?
#2
I pulled the same code when I did mine a few weeks back. As I understand it the code 21 is one of the three things you said above ecu, hot o2, or the hot o2 circuit. Have you done any messing around with any wires lately?
#4
if so i do not think that has anything to do with your problem
are you having any drive ability issues?
check your wiring, map the wires from the ecu to the o2 sensors, check the ground to the ecu, replace the o2 sensors. it must be one of those three things. this coed only happens on the California models.
mines been running like shat for a while and pulled the same code. I plan on mapping the wires form the ecu to the o2's this weekend when i get some time.
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#8
thats right. Should have 2 or 4 wires coming out of it, and bolted into the exhaust pipe.
Checkout toyotapartsales.com for the best prices on OEM parts.
You can get an aftermarket one, but BUYER BEWARE! Low quality taiwan junk will only cause you problems.
Checkout toyotapartsales.com for the best prices on OEM parts.
You can get an aftermarket one, but BUYER BEWARE! Low quality taiwan junk will only cause you problems.
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#10
yeah i agree
we definitely have the 4 wire ones due to the California emission standards we have to abide by hahahah.
to be honest mine was about 90 bux each and i bought both of them, up stream and down stream
we definitely have the 4 wire ones due to the California emission standards we have to abide by hahahah.
to be honest mine was about 90 bux each and i bought both of them, up stream and down stream
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wow thats pricy i think ill deal with the light lol now cuz i have the cat hollowed (yall came hate me if u want) adn the flowmaster on it could this be why it keeps going off? it seems to only come on when i cruise in 5th and once its on its on for a while. Then all the suddon bam its off till 5th gear
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if i had the cash i would fix it but im scraipin' lol at 250 a month plus gas and shot gun shells its close lol so the o2 can effect it that much ????
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thats asking alot lol i cant afford a reloader LOL
and i got shoot some ducks to make it threw the week with all the high school drama b.s. lol
gotta love it
and i got shoot some ducks to make it threw the week with all the high school drama b.s. lol
gotta love it