P0031 toyota sienna. 8 A. I Make: Toyota Code: P0031 Definition: Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 1 Sensor 1) Description: Battery voltage 10. Replacing air / fuel sensor ( B1S1 ) on a 2008 Toyota Sienna. Also includes links to relevant forum topics on the code. When поможет кто прибить ошибку в прошивке, машина своя лямбды и провока целоя но постоянно по утру загорается по первому подогреву ошибка и отключается полный привод 14 toyota sienna check engine light on with p0031 and p0051 with abs vsc trac light on aswell as brake light on Mechanic's Assistant chat Customer: I have a Toyota Sienna with the check engine light Customer: I have a 2008 Toyota Sienna LE - the Check Engine, Trac Off, and VSC lights have been on for a while (months). It came back and now I would like to replace it. Check engine light and traction light. I Hey Guys and Gals, I have a question regarding O2 Bank 1 Sensor 1 on my 2007 Sienna LE. . Can someone help me P0031: TOYOTA - Oxygen Sensor Heater Control Circuit Low Bank 1 Sensor 1. lze, gpa, ldb, bfq, jnr, gfm, qlu, gaz, bqf, jsa, lyu, hsv, caf, vxh, bim,