2017 Toyota Tacoma 4X4 TRD Sport trac off light and Engine light on

trac off light and Check Engine light came on while driving , the trac off light goes off while accelerating then come on while slow speed won’t shut off I bought this with 2000 miles on it from woody fulsome chevey dealer in GA drive it out here . I also have used the Cfoam gas treatment a few times maybe it messed up the exhaust sensor or O2 sensor ? Any suggestions

 

Need the check engine light codes...

 

I was told to clean my mass air flow sensor because Toyota can’t figure out what the problem is so Jim in another site says start with the air flow sensor to see if it clears up

 

Its related to the mass air flow sensor. I had the same exact check engine and Trac light symptoms.

I forgot to plug in the MAF sensor after removing the air box.... Plugged it back in and removed the negative battery cable for ~10 minutes. Problem solved.

 

This just happened to me last Friday. Took it to the dealer and was told that "P0420 OBD-II Trouble Code: Catalyst System Efficiency Below Threshold (Bank 1) ". They had to special order the cat converter. Truck has 3500 miles. I wonder what triggered that. Hope its just a defective part.