check engine light, VSC light and trac off light come on simultaneously. Repeated service and checks all say a minor vacuum leak. Gas cap replaced with toyota gas cap. I hate driving around with those lights on. I'm told nothing is seriously wrong. I can have the computer reset and remember to really tighten gas cap after refuelling. Any ideas? 2003 XLE Sienna.
Country: United StatesMake: ToyotaModel: Sienna SC
Can you give me the actual "p-code" that was retrieved?
P0440- Evap System and a vacuum valve was replaced in October.
Ok- this is a "known problem" and Toyota has issued a Technical Service Bulletin that states the repair is going to need a "revised" Canister Vacuum Switching Valve.
September 29, 2003
Title:M.I.L. "ON" DTC P0440, P0441 OR P0446
Models:'00 - '03 Avalon, Camry & Solara,'01 - '03 Sienna
Under certain driving conditions, some 2000-2003 model year Avalon, Camry (NAP only) and Solara vehicles, and some 2001-2003 model year Sienna vehicles may exhibit a M.I.L. "ON" with DTC(s) P0440, P0441 and/or P0446 stored due to an inoperative Canister Closed Valve Vacuum Switching Valve (CCV VSV). The CCV assembly process has been changed to correct this condition.
But...is it harmful to keep driving around? I was able to drive 1200 miles without the 3 lights coming back on..... And can you give me a rough estimate of the new and improved canister closed valve vacuum switching system cost for part and labor? Just a ballpark would help.
It's perfectly safe to drive the vehicle, with the exception that while the VSC/Trac lights are on you will NOT have traction control. There is a "self preservation" mechanism that when the Check Engine light is on, the Trac is shut off, just in case the reason the Check Engine is on can affect/harm the trac system. Other than that, an EVAP problem will not effect engine performance in any way.
As for the cost- Toyota is not providing a price for the updated version of the CCV VSV. Probably because it's a revise, and they haven't updated the parts info to reflect the new part number. However, they state the labor to make this repair only calls for ,6hrs - so figure you'll be cahrged for a full hour of labor, which labor rates vary from shop to shop.
Well, drivefast, thanks for your help. I think it has been worth it.
Glad I could help. Have a great day!
18+yrs experience. State Inspector and Toyota Diagnostics
Sorry to bother you again....But what is part # XXXXX ccv vsv
No bother at all...
Toyota OEM Part#: 90910-12209 - "Canister Closed Valve Vacuum Switching Valve"