Question about 2000 Ford Explorer

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Ford explorer I have a 2000 ford explorer 4.0 it has the check engine light on i can scan it and it says ''undocumented codes'' clear the codes drive a little and the light is back on, scan and says the same thing. Any ideas on how to get the light off permanantly? thanks in advance

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Some thing is wrong it does not have a specific code for possibly a computer error if you have checked the codes and are just getting undocumented codes

Posted on Jul 17, 2009


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Will the check engine light go out on it's own after the fix?

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Are you asking how to reset the computer or how to clear an error code/check engine light? Clearing a check engine light (which will also clear the error code) can be done with a code scanner. These are usually available for use at little or no cost at any larger auto parts store (they may even connect the scanner for you and record/clear the code). One word of caution, however: if you clear the code but don't repair the cause, the code and light will return after a brief amount of time. Now as for resetting the computer itself, not recommended that you try since error codes are stored in non-volatile memory. Disconnecting the battery's positive terminal for an hour or so may clear the check engine light, but, again, it will reappear and regenerate the error code unless the cause is fixed. Good luck.

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Engine light on transmission doesnt seam to shift on my 2000 ford explorere

You can try to go under the vehicle and unplug the electric connector to the transmission. Clean off any corrosion and spray wd40 on the socket and plug everything back in.

Your check engine light will stay on for about 30 startups or it can be cleared with a scanner or by removing the NEG battery cable for 10 minutes. Clearing the light with a scanner is better so if this process fixed your vehicle, it is still worthy of obtaining the defect Code.

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An error code of 0457 came up. any idea what that is?

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EVAP control system has a very large leak such as fuel filler cap fell off, EVAP control system does not operate properly.

Vehicles that meet enhanced evaporative requirements utilize a vacuum-based evaporative system integrity check. The evap system integrity check uses a Fuel Tank Pressure Transducer (FTPT), a Canister Vent Solenoid (CVS) and Fuel Level Input (FLI) along with the Vapor Management Valve (VMV) or Electric Vapor Management Valve (EVMV) to find 0.040" diameter or larger evap system leaks. Federal vehicles can utilize a 0.040" leak check rather than the 0.020" leak check required for California vehicles (click over pic for zoom).


- Engine Light ON (or Service Engine Soon Warning Light)
- Possible a noticeable fuel odor caused by the release of fuel vapors

Possible causes:
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Possible solution:
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Tech notes:
It is a very common problem with Ford vehicles. There are service bulletins for the following vehciles:
1997-2000 Ford CONTOUR
1997-2002 Ford ESCORT
1998-2003 Ford ESCORT ZX2
2000-2003 Ford FOCUS
2002-2003 Ford THUNDERBIRD
1997 F-250 Ford HD
1997-1999 Ford Ford F-250 LD
1999-2003 Ford F SUPER DUTY
2000-2003 Ford EXCURSION

Also, in this link could check this Ford Bulletin.

Hope helps (remember to rate and comment this answer).

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stop by local parts store (Autozone,Advance, etc) and have them do a free fault code test. They can print out a list of faults and clear the codes

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Unhook the battery and let it sit for about a half hour. This should reset the ecm.

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2000 ford explorer ''check engine light''

This vehicle has the OBDII system and you can only retrieve codes on this with a scan tool. Some of your parts houses like Autozone will retieve them for you for free.

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