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Sienna emmission engine check light

15 messages,  Last post on Mar 12, 2009 at 10:35 AM

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#11 of 15 Re: Code PO420 [mpokeo] by ateixeira Dec 02, 2008 (8:08 am)
Replying to: mpokeo (Nov 15, 2008 7:50 pm) I know this is way out in left field but I had a strange code and it turned out to be some rodents in the engine bay, chewing up the wiring harness. It reported bad knock sensors, but it was chewed wires!
#12 of 15 2003 Sienna P0440 P0441 P0446 by 03sienna Mar 04, 2009 (4:26 pm)
Need Help - Please! 140,000 miles - car passes emmissions test levels but fails because of these codes and misfire codes. The CEL is on, and from other post, I checked the following: 1) the gas-cap- it whooshes when I open the tank after being parked for 1 hour. 2) removed the canister - it's lightweight and dry, and does not appear to be cracked, but it had heavy gas fumes. Hoses look new and are tight. 3) solenoid valve at canister - tested fine. Connections are good. 4) upper solenoid valve at air filter - tested fine. Connections are good. 5) upper hose at air filter - looks good. What's next to check? Any advice? Replies to this message: mommy2four (Mar 08, 2009 4:12 pm) gunga64 (Mar 11, 2009 7:00 am) ateixeira (Mar 12, 2009 10:35 am)
#13 of 15 Re: 2003 Sienna P0440 P0441 P0446 [03sienna] by mommy2four Mar 08, 2009 (4:12 pm)
Replying to: 03sienna (Mar 04, 2009 4:26 pm) Not to scare you but your problem may be engine "oil gel" or sludge related. I also had my check engine light on in my 2000 Sienna for over 2 years and all they ever said was to tighten my gas cap. Now, this past November 2008, my car started to smoke in the mornings when I would first crank it. You need to go to www.oilgelsettlement.com and read it over. Also, there is a petition that other Toyota owners are signing on line. I can't remember the web address but if you google oil gel/sludge petition you will find it. Feel free to write me back if you need any advice. I just noticed that your Sienna is a 2003. Your engine may not have the same problem as the 1 MZ FE that was affected in the settlement. Good Luck! Replies to this message: gunga64 (Mar 11, 2009 7:00 am) ateixeira (Mar 12, 2009 10:35 am)
#14 of 15 Re: 2003 Sienna P0440 P0441 P0446 [mommy2four] by gunga64 Mar 11, 2009 (7:00 am)
Replying to: mommy2four (Mar 08, 2009 4:12 pm) I had 99,500 miles on my 01 sienna. When we kept getting the loose gas cap type engine light, it also started to stall on some occasions. When I brought it in they said it was leaking emmissons at the cap, and 3 other places. They would not guarrentee the $1000.00 repair would fix the problem.   I did not believe they knew what the problem was, because why would it leak all over the place. It should have been only one location. It was apparent they were trying to get me to repair things that did not need repair.   We traded the van in but if it were the oil sludge issue. I would have still been covered under the toyota extended warranty for sludge which is 100k I think. Would have been nice to know this could have been the problem all along.   Now that I think about it I am pretty sure a sludge issue would also have caused stalling. But the van would work fine most of the time. Just have that dumb engine light on. Replies to this message: ateixeira (Mar 12, 2009 10:35 am)
#15 of 15 Re: 2003 Sienna P0440 P0441 P0446 [gunga64] by ateixeira Mar 12, 2009 (10:35 am)
Replying to: gunga64 (Mar 11, 2009 7:00 am) The light was basically just reporting an indirect symptom of the sludge issue.

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