A misfire will cause this to happen go get it scanned to be sure.
My mechanic ordered the CAN interface Module Kit and it has fixed the problem and my Toyota is running like new again. Hope this helps everyone.
SOURCE: 2004 Toyota 4Runner, Regarding The VSC TRAC and VSC OFF lights
Check your switches for the VSC, some get bumped on (due to their location) and some get stuck in the "on"position.
SOURCE: Check engine and VSC lights on
that the check engine light is on indicates a problem. that the light is not flashing indicates that the computer does not think that the problem is all that bad. without some other vehicle malfunction symptoms best advice i can give you is to take your vehicle to a place that has a code reader and see what codes it has stored. some car parts stores will retrieve the codes for free, idea being that the parts store can then sell you some parts to fix the problem. but you don't have to buy anything, you can just have them read the codes. some of the parts stores will give you a printout of the codes too. get the codes and you know what the computer is not liking, then you can make a more informed decision about what to do next. hope that helps.
SOURCE: Why is the vsc light check engine light and trac
to reset for a momentany malfuntion,disconnect the negative battery terminal few minutes, reconnect,start engine and drive to check
SOURCE: 2004 Sequoia. VSC TRAC, TRAC OFF, and Check
It is not hard to change the sensor, it just screws into a threaded hole. The light will not go out immeditaly, after the sensor is replaced. It needs to go thru a drive cycle. Your best bet is to replace the sensor and get the code cleard by whoever scanned it for the 0031 code.
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