CEL came on on my son's ST, reads code 21. Replace front oxygen sensor? anything else?
Code 21 flashing - 6G Celicas Forums
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you asnwered your own question.
QUOTE (56willysnut @ Jan 15, 2010 - 6:50 PM) 
>CEL came on on my son's ST, reads code 21. Replace front oxygen sensor? anything else?
you asnwered your own question.
yea...that should clear it
This post has been edited by 95st-celica: Jan 15, 2010 - 6:07 PM
This post has been edited by 95st-celica: Jan 15, 2010 - 6:07 PM
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