I have a similar issue with a 2002 Sienna. Several years back we were told the engine
light was on because of a computer issue and we left it at that since it did not seem worth the $1000 we were quoted since it was out of warranty (over 80K per this thread). However, we then moved to MD where we cannot pass emissions testing with the engine light on. The new mechanic said it was not a computer issue but the oxygen sensors
. We went through the expense of replacing the oxygen sensors and the light stayed off a little while (long enough to pass inspection), but is back on and registering a catalytic converter
error. I do not know the exact code. I removed the glove box as you said and saw two part numbers, 87010-08040 and 88510-?8050 (? - is rubbed off). The first is off to the left and the second is more straight back when the glove box is out. Is this the old/original part? If we were to look for a used ECM, how could we tell if it is an old or updated one?
JA: Thanks. Can you give me any more details about your issue?
Customer: That is most of it. Mainly trying to avoid another $1500 or more expense on a 14 year old van to pass the next emissions test.
JA: OK got it. Last thing — Toyota Mechanics generally expect a deposit of about $20 to help with your type of question (you only pay if satisfied). Now I'm going to take you to a page to place a secure deposit with JustAnswer. Don't worry, this chat is saved. After that, we will finish helping you.