Vsc, fwd and check engine light on

Asked by Jan 05, 2018 at 01:51 PM about the 2007 Toyota RAV4

Question type: Maintenance & Repair

All three lights came on at the same time,  had the
o2 sensor replaced, light went off, but after awhile
they came back on it’s a 2007 rav4

1 Answer

Is it idling a little rough? Try running an engine cleaner in the oil. The VVT will clog if it is not regularly serviced causing build up. This causes exactly what your describing. I would also look at the mass airflow. The lights were cleared when the O2 sensor was installed. They turned back on because the problem wasn't fixed. Toyota will be little to no help diagnosing this. I speak from experience. Find a good indecent mechanic that works off more than just codes.

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