CEL battle!
#16
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Join Date: Mar 2012
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Model: Cherokee
i dont remember the code, but i disconnected the battery the other day to check fuses, and now the light shut off, checked the voltage to the sensor this morning and got nothing. got pissed off, took it to a shop that my dad goes to, the guy scanned it, said both o2's are running perfectly fine. and yes the engine was running when i tested it. not sure what to do now, guy told me clean the throttly body and maf and bring it back on monday when thier jeep guy is there.
#17
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Location: Landers, CA
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Year: Several
Model: Cherokee
Engine: 4.0
You may no longer have a problem.
when you replaced the sensors, did you leave the battery disconnected for AT LEAST 8 HOURS?
That clears the deep memory - the code you were getting was from the old sensor - the computer didn't know you replaced it.
There is ONLY 2 ways to clean the deep memory, 8 hour disconnect or the dealer's DRB machine. other methods just clear the surface temporary memory.
But - driving it awhile with the problem sensor replaced will eventually overwrite the deep memory.
when you replaced the sensors, did you leave the battery disconnected for AT LEAST 8 HOURS?
That clears the deep memory - the code you were getting was from the old sensor - the computer didn't know you replaced it.
There is ONLY 2 ways to clean the deep memory, 8 hour disconnect or the dealer's DRB machine. other methods just clear the surface temporary memory.
But - driving it awhile with the problem sensor replaced will eventually overwrite the deep memory.
#18
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Join Date: Mar 2012
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Model: Cherokee
You may no longer have a problem.
when you replaced the sensors, did you leave the battery disconnected for AT LEAST 8 HOURS?
That clears the deep memory - the code you were getting was from the old sensor - the computer didn't know you replaced it.
There is ONLY 2 ways to clean the deep memory, 8 hour disconnect or the dealer's DRB machine. other methods just clear the surface temporary memory.
But - driving it awhile with the problem sensor replaced will eventually overwrite the deep memory.
when you replaced the sensors, did you leave the battery disconnected for AT LEAST 8 HOURS?
That clears the deep memory - the code you were getting was from the old sensor - the computer didn't know you replaced it.
There is ONLY 2 ways to clean the deep memory, 8 hour disconnect or the dealer's DRB machine. other methods just clear the surface temporary memory.
But - driving it awhile with the problem sensor replaced will eventually overwrite the deep memory.
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