Question about 2006 Toyota Avalon Limited

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Toyota Avalon 2006 all Check Engine, VSC, Traction Control lights are on

Hi I have an Avalon 2006 (123100 mileage), that has all the above lights ON. I went to car repair shop, and they scanned the codes. It came up with these; P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0356, C1201. What do you think?

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  • 70 Answers

That code 356 is a bad coil. if it is completely dead than you now have a 5 cylinder car.... very bad not only on mpg but also on the life of the engine. when you have a "dead hole" it can affect the other cylinders and you have misfire codes for all 6..... this could mean you simply need a tune up or that there is something affecting all cylinders. check for a vacuum leak after the air flow sensor, or a ruptured fuel pressure regulator (remove the vacuum line at the regulator and smell for gas cause there should not be gas on that side of the diaphragm) fouled spark plugs, clogged exhaust or catalytic converter, stuck open or dirty EGR valve to name a few. change that #6 coil first and at least inspect or change the spark plugs... c1201 relates to a communication stop between ECU's , don't assume that as the vsc lights etc were illuminated then that is the system that is faulty. It is most likely that the fault is within the engine system but with vehicles equipped with vsc all systems are linked so a fault with one will log a code in all others ( normally a communication stop code as you have)
I would advise fixing the engine codes first then get the other systems checked out

Posted on Apr 01, 2014

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Posted on Jan 02, 2017

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dsacco86
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SOURCE: obd codes p0300 p0301 p0303 p0305 p0401

P0401 Exhaust Gas Recirculation Insufficient Flow Detected

P0300 Random/Multiple Cylinder Misfire Detected
P0301 Cylinder 1 Misfire Detected
P0303 Cylinder 3 Misfire Detected
P0305 Cylinder 5 Misfire Detected


I would check out the EGR valve. That maybe what is causing all the misfires.

Posted on Mar 24, 2009

mkv0525
  • 358 Answers

SOURCE: Check engine Light

coils, injectors, or plugs. need more info.

Posted on May 20, 2009

  • 139 Answers

SOURCE: check engine with vsc & vsc off light came on

Autozone will check your engine codes for free.

Posted on Jul 05, 2009

j_del
  • 1586 Answers

SOURCE: Toyota Avalon 2006, I ahve a VSC indicator light

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

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  • 9 Answers

SOURCE: 2006 Toyota Avalon Limited, 70,000

charc, cansiter vsc comes on with check engine light

Posted on Sep 22, 2010

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Toyota Avalon 2006, I ahve a VSC indicator light on, the Slip indicator/traction control system off light is on and a check engine light is on. Are they all related or seperate, and what does it mean when...


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.

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Vsc vsc off check engine light on 2000 toyota avalon I have the same problem on my 2006 Avalon Limited. Error code indentifies the O2 Sensor located on Bank 1 Sensor 1 as defective.


Disconnect your battery for 10 minutes after which you connect it back the lights should go off. Don't report to toyota. Nigerian style!

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