Hello Guys,this is the problem... i have a 2002 Toyota Tacoma,4x4,V6, and i recently instaled a magnaflow exhaust system, let me tell you the sound is very loud!! like a Trophy Truck....But, 6 hours later, the CHECK code comes ON permanently, then, i took the tuck with one friend of mine who has a scanner, and he told me my O2 sensor is probably damaged (the one it comes beside of catalitic converter on the muffler),So, he said i need to replace it with a new one.
Tha question is: Is there a way to test if the O2 sensor still works?
I appreciate your help about this, and i ´ll be online waiting for any suggestions... Have a Nice Day!!!!