How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Skyvisions Your Own Question
Skyvisions, ASE Certified Technician
Category: Toyota
Satisfied Customers: 14422
Experience:  Toyota Master Diagnostic
Type Your Toyota Question Here...
Skyvisions is online now
A new question is answered every 9 seconds

The check engine light on my 2005 Tacoma Access Cab 4WD pickup

This answer was rated:

The check engine light on my 2005 Tacoma Access Cab 4WD pickup came on and stayed on about a week ago. I took it to the dealer from which I bought it yesterday and after five hours of waiting the service rep. told me that the mechanic had determined that the problem was the charcoal canister. The repair with parts and labor is about $700. I only drive the truck during the winter months so it only has 23,800 miles on it. Since there are no moving parts in a charcoal canister shouldn't it last a lot longer than that? Could there be another cause for the problem and could this have been misdiagnosed?


Just to clarify there are moving parts mostly diaphragms and one vacuum switching valve. Do you happen to know what the code number or code numbers were that caused the check engine light come on? I can better advise you if I have the exact code numbers. Is it possible that they misdiagnosed the problem, you bet YA! Drivability and emission control problems are the most misdiagnosed parts replaced at your expense type of repairs that I run into.



Customer: replied 7 years ago.
the codes on the service statement are: Pulled P043E, P043F, P2401 and P2419 Found vacuum pump codes. Recommend replace charcoal cannister.

Well unfortunately this one is a no-brainer for the dealership. I was kind of hoping you were not going to tell me it was these codes. In 2005 and 2006 there was a technical service bulletin number EG025-06 that deals with all of these codes. The problem is in fact in the charcoal canister and is related to the vacuum pump that was introduced into the system. The EPA mandated that all emission control systems have a five-hour off evaporative emissions system test done automatically. This vacuum pump built into the charcoal canister designed to run that test while the car has been shut off. The problem is the vacuum pumps go bad. I would try and see if you can get some assistance on the part from the dealer but don't hold your breath these all go bad on these years. If you want to try and buy the canister online for wholesale prices go to I wish I had better news for you but unfortunately even their lube tech could diagnosed this one.



Skyvisions and 5 other Toyota Specialists are ready to help you