Question about 2004 Toyota Sequoia

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2004 Sequoia. VSC TRAC, TRAC OFF, and Check

2004 Sequoia. VSC TRAC, TRAC OFF, and Check Engine lights are on. I got the P0031 code which is the bank 1 sensor 1 heated O2 sensor. 1) If I change the sensor, will the lights go out?
2) How difficult is it to change this sensor?

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  • adebomi ayodele Nov 02, 2011

    is there any other name for that particular sensor?

  • Anonymous Mar 25, 2014

    how to reset yaw sensor vsc& trac light comes on and brakes grab when applied

  • Neil Castrence
    Neil Castrence Oct 03, 2016

    I had the same problem with my Toyota Sequoia 2003:VSC TRAC, TRAC OFF, and Check Engine lights are on. ABS codes showed 1) C0200 Rt Frt wheel speed sensor malfunction, 2) C1203 Engine control system malfunction, 3) C1223 Malfunction in ABS system, 4) C1247 Malfunction stroke sensor. I picked up a Rt front wheel speed sensor and a gas cap from the junk yard. Replaced the gas cap and drove home. The lights were still on and decided to test the codes after I came home. I was surprised to read only 1 code showed which was C1203. I was getting ready to replace the sensor. For the last time I started the truck and Voila! no more lights on my cluster panel. Can't believe it. I drove around roughly to activate the sensor and it never came on. Hew! It was the old gas cap that just need replacement. It saved me a lot of hard labor. It was just a few dollar fix. YES!!!!!NCast

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  • Toyota Master
  • 1,861 Answers

It is not hard to change the sensor, it just screws into a threaded hole. The light will not go out immeditaly, after the sensor is replaced. It needs to go thru a drive cycle. Your best bet is to replace the sensor and get the code cleard by whoever scanned it for the 0031 code.

Posted on Jul 23, 2009

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