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How many sensors?


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Hi ya guys.

well my 99 Vienta has popped up a check engine light.

Turns out it's the O2 sensor.

Now bit of confusion here!

How many sensors does my Vienta have?

It's a April 1999 build.


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4 from memory, 1 upstream & 1 down on each bank. You will need a scan tool to pull the DTC & suss out which sensor & reason for code. Code will read something like "DTC P0000 - B1 S1 Reason for code" - so Bank 1 Sensor 1 = sensor before cat on Bank 1 (front 1 think)

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