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Toyotapro, ASE master tech
Category: Toyota
Satisfied Customers: 9974
Experience:  ASE Certified, 10+ years Lexus and Toyota Certified
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i have a 2004 toyota sequoia with,trac off,vsc trac and check

Resolved Question:

i have a 2004 toyota sequoia with,trac off,vsc trac and check engine alarm display on instrument panel that came in today.
Submitted: 6 years ago.
Category: Toyota
Expert:  Toyotapro replied 6 years ago.

Hello and thank you for using just answer!

Was anything done to the truck before this issue happened?

Did you just refuel?

Is the check engine light on solid or is it blinking?

Does the truck seem to run ok?

Do you have access to a scanner to pull codes out of the computer?

Customer: replied 6 years ago.
nothing was done to truck
i refueled sat.morning with 22 gal. of regular unleaded,tank is 3/4 full
check engine light is solid
truck runs great no problems
do not have access to scanner

Expert:  Toyotapro replied 6 years ago.
ok, really it will need to go on a scan tool to see what area the computer recognizes an issue in, check to be sure you put the gas cap back on tight because it can cause this issue first as that is a common issue. A commonly confused and misunderstood thing here is that when the check engine light comes on it ALSO sets the VSC and and TRAC systems into OFF mode as a failsafe feature. If the gas cap is loose then you can simply disconnect the battery for a few minutes to reset the lights but if that is not the issue then more involved diagnostice with a scanner are needed to see what is happening. Because the light is on solid this means that it is a secondary sensor bot a primary sensor malfunctioning so the truck is not unreliable or unsafe to drive for now. If the light was blinking then that would indicate a major issue such as a misfire and it would not be drivable.
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