I have a brand new generic toyota oxy sensor o2 ... I have pulled the failed one out of my Prius. Google My problem is the holes are in a different patterns and do not match from old to new on the barrel part of sensor
If you are concerned about whether the generic part will work, why not return it and buy the correct part instead?
Too late for return no receipt or known seller...just wonder how 9 hole pattern (old) and 28 hole pattern (new) would run ICE
If you are referring to the sensor upstream from the catalytic converter, that is an air/fuel ratio sensor and if you actually bought an oxygen sensor, that part will not work at all. If you are referring to the sensor downstream from the catalytic converter, then it shouldn't matter as long as you can figure out how to wire the sensor to the wiring harness.
The upstream looks impossible to get to or access without a lot of labor....I have actually removed the most accessible downstream sensor. Oxygen sensor - Wikipedia, the free encyclopedia .....which feedback to the ECU to adjust emission control
The job of the downstream oxygen sensor is to report the effectiveness of the catalytic converter to the engine ECU. It doesn't really impact air/fuel mixture, which is the job of the upstream air/fuel ratio sensor.
Patrick do you know if Denso is the OEM for the Toyota 02 sensors? Working on an 07 Have you ever replaced with Denso instead of the Toyota brand in their box?
I'm not Patrick, but yes Denso is the OEM for some (ok, a lot of) Toyota parts, including tihe O2 sensors. I don't know if Patrick has used Denso boxed rather than Toyota boxed parts, but others here have, some of whom are professional mechanics. The key thing when using non-OEM (and even Toyota branded, in fact) is to ensure the parts are genuine and not counterfeit. Price can be an indicator, but not necessarily a definitive one. Prices one-fifth to one-tenth, or even half the price, of the OEM are not likely to be genuine.
