Diagnosic code 12 (recently disconnected battery), any ideas?
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Year: 1996
Model: Cherokee
Engine: 4.0
Diagnosic code 12 (recently disconnected battery), any ideas?
Hey all,
So my XJ (1995, OBD I) is putting out two codes, 12 and 21. 12 is battery/computer recently disconnected and 21 is a malfunctioning O2 sensor. I haven't recently disconnected the battery so I'm not sure why 12 is being thrown. Any one have an idea as to why 12 is being registered in the computer? Could a bad O2 sensor make 12 register?
So my XJ (1995, OBD I) is putting out two codes, 12 and 21. 12 is battery/computer recently disconnected and 21 is a malfunctioning O2 sensor. I haven't recently disconnected the battery so I'm not sure why 12 is being thrown. Any one have an idea as to why 12 is being registered in the computer? Could a bad O2 sensor make 12 register?
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Year: 1996
Model: Cherokee
Engine: 4.0
thanks for the replies guys
it's definitely possible i disconnected the battery within the last 50 starts. i'll worry about it if it keeps coming back after i take care of the o2 sensor. least i know if it keeps up, i can check the ground to the PCM.
it's definitely possible i disconnected the battery within the last 50 starts. i'll worry about it if it keeps coming back after i take care of the o2 sensor. least i know if it keeps up, i can check the ground to the PCM.
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