I have a 97 also and about 6 mos. ago I had the same type of problem. It
turned out to be the O2 sensor going bad. I let it go for a while but the
light eventually began to sty on for longer periods. After that I began to
experience performance problems so I took it in. The only difference is
that when Ipulled the codes I got a code that indicated a possible O2
sensor malfunction.
When you said you got only a code 12 did you mean you only got a 12 and
then a 55 to signal end of codes? If all you were able to retrieve was the
12 then there may be more codes following that. when I get a code its 12,
whatever the problem code is , then a 55. Hope that helps.
Tony J Mastres
Senior Photographer
University of California @ Santa Barbara
Instructional Resources/Photo Services
1120 Kerr Hall
Santa Barbara Ca 93106
UPTE local 9119
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