Check engine and the traction lights came on

I have a 2009 tacoma...so mine just came on when i started my truck after work. hmmm... maybe it will go away tomorrow?

 

Good luck

 

Autozone said it was the gas cap... I open and closed it a few times and it went away 3 days later.

 

Hi everyone, I finally registered & I wanted to share my experience.
Last week the skid light (Traction light) & CEL (Check Engine light) came on .
I have 83,900 miles.
The Trac light has come on before & eventually goes off.
After 5 days it continually stayed on.
I found the most logical answers on Tacoma World.

(sensor bank (PO 137 02)), (regulator), pre & post sensors...etc).

I picked up a cabin AC filter & installed it..... routine maintenance (yesterday Mon. 7-11).
I did not know that O'Reiley would check the codes.
I was going to have O'Reiley check the codes today (7-12) but the lights went out after I installed the filter.
One of the treads on CEL & Trac Light stated that he replaced the heater relay & it solved his problem.
My only explanation is that my (really) dirty filter was putting a strain on the relay or unit because I used the defrost a lot lately to burn the dew on the window in the morning.

Hope this adds a possible answer if any of you have this problem....
Regards......
me-retired

 

By the way, I did clean the gas cap real well yesterday also.
me-retired
Michael

 

A blocked fan will draw less current than a free flowing one, because it is doing less work .... Counter intuitive but true.

 

This is more believable.

 

Might be a little early to link the oxygen sensor codes to a dirty cabin air filter. Time will tell if the codes come back