I was seeing my Yaris Verso VVTi 2NZ-FE engine and a cable was hanging (with light grey connector, 4 pin socket, and a single wire line) that is not connected anywhere. I tried to search for the socket but could not find it. It supposed to be disconnected?

Image of not connected wire

  • Any switches in the area? like reverse light or oil pressure? – Solar Mike May 1 '19 at 11:22
  • As much as I could see and touch I didn't find any. The cable is near front radiator, under the alternator. The "Check engine" is off too. – Ganju May 1 '19 at 11:41

That looks like the oil pressure sensor wire and plug. The weird thing is that I don't see the connection on the block behind it. You might look around and see if you can find a plug similar to the one shown in this image. It should be above/after the oil filter, because it's detecting the pressure of the oil being pumped through the filter.

You should also check for a broken plug which is screwed into the block but has the plastic plug part broken off of it. After a few years, those plastic clips often become brittle, especially when exposed to heat, and can be easily broken. If that's the case you'll probably need to buy a new oil pressure sensor, or figure out a hack job to connect the wire to the broken one.

toyota yaris oil pressure sensor location

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