What causes the check engine llight and Vsc light to go on in a sequioa

Asked by Oct 24, 2014 at 09:12 PM about the 2005 Toyota Sequoia Limited 4WD

Question type: Maintenance & Repair

1 Answer

20

you would need to tell me what code numbers you see but The P0442 code is your primary failure code. This means there is a small leak that has been detected in the evaporative emission system. The P0441 and P0446 code normally will set by default whenever there is a leak in the system. When the evaporative system runs its self test it cannot monitor the pressures accurately and this is where the 441 and 446 codes normally come in place. The most common issue is usually related to the gasket being left loose or corrosion at the ceiling point of the gas. If you are certain that that is not the issue your only option is to have the system tested with a vapor canister smoke machine which applies a smoke into the system under pressure. Then you have to locate the leak. In some rare cases I have seen the welds crack on the tubes that go up to the fuel filler neck. Regarding the P0051 code this means the heater circuit in bank two sensor one has failed for the oxygen sensor. Bank two on this engine is the passenger side. This sensor is located in the exhaust pipe just down from the exhaust manifold. 95% of the time this ends up just being a bad sensor. If you replace the sensor yourself and it breaks loose and then freezes do not force it. Get some brake fluid and squirt it on the base of the sensor and the threads in the manifold let it set for about 10 min. then work it back and forth and it should come right out. Yes I did say reak fluid . Low pressure in canister or it is not purging correctly possible due to a vacuum leak. Could be a malfunction in VSV for EVAP, VSV for vapor pressure sensor or vapor pressure sensor. Or vacuum hose cracked, blocked, etc, charcoal canister leak, cracked fuel tank overflow check valve. The issue with the wheel noise is most likely not related to this code. Does the clicking noise occur when making slow speed turns? The TRAC and VSV lights may automatically come on with the CEL. This would be to reduce engine loading.

2 of 2 people found this helpful.

Your Answer

Toyota Sequoia Experts

  • #1
    Tom Demyan
    Reputation
    170
  • #2
    PapaBigGuy1
    Reputation
    110
  • #3
    Rowefast
    Reputation
    90
View All

Related Models For Sale

Used Toyota 4Runner
312 Great Deals out of 25,192 listings starting at $1,750
Used Chevrolet Tahoe
767 Great Deals out of 41,930 listings starting at $1,980
Used Toyota Highlander
516 Great Deals out of 33,837 listings starting at $2,450
Used Toyota Tundra
591 Great Deals out of 35,140 listings starting at $2,900
Used Toyota Land Cruiser
15 Great Deals out of 1,053 listings starting at $3,995
Used Nissan Armada
146 Great Deals out of 9,501 listings starting at $3,400
Used GMC Yukon
584 Great Deals out of 22,183 listings starting at $2,145
Used Ford Expedition
334 Great Deals out of 17,154 listings starting at $1,930
Used Chevrolet Suburban
432 Great Deals out of 23,774 listings starting at $1,799
Used Honda Pilot
536 Great Deals out of 39,801 listings starting at $300
Used Toyota Sienna
463 Great Deals out of 26,102 listings starting at $1,250
Used Toyota Tacoma
660 Great Deals out of 45,744 listings starting at $2,700
Used GMC Yukon XL
220 Great Deals out of 14,721 listings starting at $1,900
Used INFINITI QX56
49 Great Deals out of 1,565 listings starting at $4,900
Used Cadillac Escalade
242 Great Deals out of 12,014 listings starting at $2,000

Used Cars For Sale

2018 Toyota Sequoia Limited 4WD For Sale
257 listings starting at $57,844
2017 Toyota Sequoia Limited 4WD For Sale
181 listings starting at $49,999
2016 Toyota Sequoia Limited 4WD For Sale
4 Great Deals out of 46 listings starting at $40,500
2015 Toyota Sequoia Limited 4WD For Sale
25 listings starting at $39,740
2014 Toyota Sequoia Limited 4WD For Sale
16 listings starting at $29,977

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.