Question about 2008 Toyota Sienna
Had the Van in to get a alinement job and tire rotation, got a check engine light with trouble code P0300 and my VSC and Traction Control light as well their was never a problem prior to the alignment
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Posted on Jan 02, 2017
SOURCE: VSC Trac off/ VSC Trac
The Oxygen sensor can influence automatic transmission and it is used by electronic injection system, but does not affect the traction control system.
The problem is because you reset the car computer. Try again resetting by unplugging battery for one minute.
Also a contact on wiring harness can have caused both errors, and the sensor and traction control were giving error because of the contact.
Posted on Mar 28, 2009
check air filter for dirty , how many miles or kms have your car? , maybe need to replace spark plugs, try to reset the ecu for a momentany malfunction, remove the negative battery terminal few minutes and reconnect,start engine and drive, check if lights goes off , please write me
Posted on Jul 05, 2009
Toyota is known for sensor problems (Especially tire pressure and traction control).
Suggest that you ask your local AutoZone to run a free ODB check on your car and define the specific sensor messages. That may get you in the right direction... or tell you that the chip that collects the data is smoke..... it can happen with excessive heat or voltage spikes.... Good Luck and keep us informed....
Posted on Oct 10, 2009
VSC is Vehicle Skid Control. The system is usually on, but when you turn it off (on my mother's 01 Avalon, it's on the knee bolster, below and to the right of the steering column), the indicator comes on in the cluster to let you know it's turned off - it's just a reminder to you that you don't have that safety net activated. The way the car is set up, even if you turn it off, when you shut down the engine and then restart it later, the system is rearmed automatically.
What I'm thinking is, since you've obviously had the engine on and off and the VSC OFF and TC OFF warnings are still illuminated, you probably have a problem with either an ABS sensor, a yaw sensor, or something related to those, as those systems rely on a bunch of sensors to work. If they have failed, it should illuminate the check-engine light. Stop at Auto Zone or Advance Auto Parts and have them scan the car's computer (it's free). They'll give you a list of the fault codes that come up. If you post them up here, I can define them for you and help you solve the problem - just post them as a reply or follow-up on this posting.
Posted on Nov 08, 2009
Testimonial: "Thanks a bunch!! Big help and I will do what was suggested to solve the problem. Thanks again."
I had the same problem. The dealer said it is an emissions problem with a canister. They wanted almost $1300 to repair it. My vehicle had only 45000 miles so I complained to my regional office for help. They ended up providing the parts for free and I paid the labor which was still $275
Posted on Dec 21, 2010
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The Engine and Automatic Transmission (not applicable to manual transmissions) in this vehicles drive train are fully electronically controlled by a computer called the PCM and TCM (Power Train Control Module, Transmission Control Module). When a problem like this or other drive-ability related problems occurs the computer stores a record of the problem (there are of course some exceptions to this, like the fuel pump, engine coolant temperature sensor and MAF sensor for instance) in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL A TRAINED TECHNICAIN HAS DIAGNOSED THE PROBLEM TO AVOID SPENDING YOUR HARD EARNED MONEY ON PARTS THAT MAY NOT CORRECT THE PROBLEM. Also always check fuel pressure for correct spec for your make and engine type.
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