IS - 1st Gen (2001-2005) Discussion about the IS models up to the 2005 model

trac and vsc light

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Old 02-02-11, 04:58 AM
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cashed350
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Default trac and vsc light

i am curious as to why my TRAC and VSC light are staying on? could the actual button be bad. i could care less because i usually have more fun with the trac off anyway but i dont like the lights staying on on my cluster. any help would be greatly appreciated as to a starting point to find the problem.
Old 02-02-11, 01:30 PM
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sway162
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Are you running on aftermarket headers?

It's probably your 02 sensors.

bank 1 sensor 2 and bank 2 sensor 2. Go get your car scanned for codes.



I have my lights on as well but that's because I am cat less without any 02 sims.
Old 02-03-11, 05:15 AM
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cashed350
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stock exhaust, yes it has an b2s2 heater failure code but i can clear that and the trac and vsc light stay on. it takes about a day for the cel to come back on. oh and on my other IS i have a header and no cats but i run a spark plug non-fouler in the secondary 02 bungs and screw my 02 sensors in them. . . no cel. as long as the ecu see's a difference between primary and secondary then it thinks there is a converter.

Last edited by cashed350; 02-03-11 at 12:17 PM.
Old 02-04-11, 01:19 PM
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anyone? no ideas?
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