Toyota Tacoma Check Engine Light

How to scan for codes.

[@mikeschoolcraft21]

Check engine and trac off lights came on after a spark plug change. I found 3 loose plugs at 60k, one had dry threads and burned boot on the coil pack. I disconnected the battery, so far so good. The gas mileage got better.

[@bnperrault]

Good Video, Thanks

[@ricardotrujillo5106]

Like the video and subscribed already. Recommend me a decent scanner for a diy home mechanic for a 2013 Tacoma V6 and automatic transmission. Thanks.

[@walterquick8649]

PO4O2 code? 1999 toyota whats that?? thanks

[@MultiHankdog]

Hello Toyota guy! My check engine light came on my 2003 camry! Could the very cold temperatures cause this? Should I get it checked out anyway?

[@ToyotaMaintenance]

I will deal with it ASAP

[@MultiHankdog]

Auto Zone came up with p0420 mass air flow sensor. But a friend of mine says that means catalytic converter is bad! What do you say?!

[@ToyotaMaintenance]

first, sensor needs to be tested or its wiring....

[@MultiHankdog]

I will check tomorrow...hopefully not the cat!

[@mikeash7428]

thanks.

[@ToyotaMaintenance]

you are welcome...