Question about 2007 Lexus GX470
I have engine light VSC and VSC Trac light on. The code is P0031. Which tells me B1S1 Sensor problem. Now I replaced the sensor, aand got the light reset. But after driving 10 miles it came light up again. Any suggestion ?
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Posted on Jan 02, 2017
The VSC on TRAC off lights will come on when there is an air fuel related issue.
If you have recently filled your tank, unscrew and tighten the gas cap till it clicks. The lights may need to be reset if they stay on after that. They will also be triggered by a fouled O2 sensor ins the engine or exhaust as well as a sticky throttle valve.
If a dealership resets the lights they can attach a code reader under dash to determine the cause in about 5 minutes.
Posted on Jan 10, 2010
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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