code 12, 21 on 92 4.0
11-01-2013, 02:02 PM
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Year: 1992
Model: Cherokee
Engine: 4.0L I6
code 12, 21 on 92 4.0
As the title states... I have a 92 4.0. I decided to check for any codes just for sh**s (my mpg decreased a little bit with no change in driving) and it threw code 12 and 21. I know 12 is battery recently disconnected, although I haven't recently disconnected it. Is it a thing for the XJ to think it's been disconnected recently from time to time?
The second code is 21, which I believe means bad O2 sensor. My question is, how many O2 sensors does a 92 4.0 have and where are they?
Thanks in advanced CFers!
The second code is 21, which I believe means bad O2 sensor. My question is, how many O2 sensors does a 92 4.0 have and where are they?
Thanks in advanced CFers!
11-01-2013, 06:22 PM
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Year: 1991
Model: Cherokee
Engine: 4.0 I-6
I think a '92 only has one O2 sensor. I may be wrong though. I had a '92 and currently have a '91 and my '91 only has one on it.
11-02-2013, 02:57 AM
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Year: 1992
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