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Why is your car completely dead after you disconnected the battery cable and reconnected it?
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If code 12 means the battery or computer has been disconnected how do you reconnect the computer?
Can you be more specific? Was your battery disconnected or did it lose it's charge? If you did not disconnect the computer, it would not need to be reconnected. If your battery was dead or disconnected, simply remove the positive battery cable for about 10 minutes and re-connect it. This should clear your code. Even if the code does not clear you should have no problems with the function of your car.
Why the emission lite won't shut off after fixing a disconnected hose?
The computer needs reset. Disconnect the negative battery cable and let it set for 15 to 30 minutes. This will allow the computer to lose power and reset itself when the cable is reconnected. This should fix the problem if indeed the emission light is on because the hose was disconnected.
How do you get the check engine light to go off on a Millenia 96-diagnostic read out says to fix erg valve-took it off cleaned and disconnected battery cable and reconnected and light came on again?
Three other posters mention variations of this to solve your problem: Disconnect the positive battery cable for about 20 seconds.
What is the first thing that should be disconnected when removing a fuel tank?
The negative battery cable from the battery.
Why does your radio not work after battery replacement?
Anytime a battery cable is disconnected you have to reprogram the set radio stations
98 ford expedition disconnected battery cable radio turns on no sound?
When you disconnect a battery cable all the preset radio stations ( and the clock ) have to be reset
Your car wont crank what can this be?
Dead battery, disconnected starter cable, or the engine is missing.
How do you disconnect one battery terminal for 30 seconds?
Loosen the bolts holding the negative battery cable to the negative battery post. Once you loosen the bolt twist the cable until it comes off. Wait 30 seconds and reconnected it.
Would a car battery drain if only one cable is connected?
No, not from something pulling power from the battery. A battery that runs down with one cable disconnected has a dead cell and must be replaced.
How do you reset a hummer h2 car computer?
You can reset the computer in your H2 Hummer by disconnecting the ground cable from the battery. Leaves the battery cable disconnected for 10 seconds, and reconnect.
Which battery cable should be reconnected first?
Positive should always be connected first. The pull of electrons toward the positive terminal will cause a spark.
Will a diesel engine run with battery cable disconnected if the alternator is bad?
A vehicle may not run if the battery cables are disconnected with or without a bad alternator. The best way to test an alternator is by voltage output when applying a load.
