i remember that it came on a couple of months ago for awhile and i remember filling up one day with regular gas and it went off, but now its back on. i had a cat put on a few years ago. i hope thats not the problem.could it be the rear 02 sensor.
my check engine light came on and its staying on whats the problem? not blinking on 1996 Toyota Land Cruiser
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Need trouble codes to help you. Go to a parts house and get a free code readout.
i used a hand held dianogstic machine and the code that came up was PO420