High quality product.
Check engine came on in our 2009 Toyota Rav4 with 168,000 miles on it, along with the traction control and ABS lights. DTC's indicated it was an o2 sensor, and low power / memory in the PCM. After researching the codes, I found this to be a fairly common combination of codes / dash indicator lights on several different Toyota vehicle models. I changed both the upstream (this sensor) as well as the downstream o2 sensors, and all codes and dash lights have now been clear for several weeks. Denso makes high quality o2 sensors, and I only purchase this brand or Bosch when replacing sensors. While I am not a professional mechanic by trade, I have been fixing my own vehicles as well as those of many people I have known over the past 35 years, I believe that qualifies me to accurately review this product.
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