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Re: resetting the computer
I would reset your computer. CEL will stay on unless you clear the codes or reset the computer. To reset the computer you will need to pull the negative cable off the battery for 20 Seconds, place it back on for 5 seconds then back off for 20 seconds then back on for good. Thanks for using fixya!
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Newer vehicles are equipped with a computer that monitors many sensors and devices. If an sensor input to the computer is not right; the computer will turn on the " check engine" light.
A OBD tool, plugs into the computer to see what the error is.
The OBD tool can also reset, the "check engine" light; after repairs. http://en.wikipedia.org/wiki/On-board_diagnostics
the neutral switch might be the reason for our back up light check the wire fron the neutral switch speed sensoe all goes at the in the same harness maybe harness overheat on exhaust or melted in the neutral switch check it out let me know pierre
There is nothing do do to reset it. After you change it you're done. If you're talking about your check engine light being on, you can reset it with a scan tool. If you don't have access to one, disconnect the battery and wait a couple minutes before connecting it back. If you're having actual mechanical issues after you've installed the output sensor you might need to replace the input sensor also.
If you replace the o2 sensor and that is the problem of why the check engine light is on then yes it will reset on its own. this will take a few days of driving due to the computer running all its tests and all passing then light will shut off. the code you have is for a bad o2 sensor or wiring to it, there are a couple of o2 sensors, this code is for the rear o2 sensor.
It depends. Are there codes in the computer now? Has it bee reset since you replaced the input speed sensor? If the codes are still in there, the transmission may still be in limp-in mode.
Your transmission is computer controlled. Trying to diagnose or repair it without the ability to interface with the computer that controls it about the same as surfing the internet with no monitor. If you push the right buttons and click your mouse just right, you might get to the page you are looking for (not likely, but possible). However, when you do get there, you still won't know it....
It's possible you fixed the problem and just need the code to be reset. Some codes will reset themselves after the repair is made. Others take time to reset (a few days in some cases). There are some codes that are stubborn and need to be reset by a OBDII code reader.
your car is going in "limp" mode, the computer is seeing a problem with a sensor on the transmission,so it won't up shift because it doesn't know how fast your going. check the speed sensor,the input sensor,and the output sensor.one of these is not working correctly, it will help when you have the car checked for codes,look for history codes section. cycling the key resets the soft code but it will always return until repaired.