94 pathfinder, check engine light is on

Take a look at the FAQ on

The O2 sensor is usually the culprit in this situation. Unfortunately, I believe that engine has two of them, and it takes a diagnostic tool of some sort to determine which sensor is bad.

ypu'll probably have to change both O2 sensors - because it might not pass Inspection.

Change your O2 sensor. On my 94 Pathfinder, there's only one sensor, not two. It is located on the exhaust pipe after the y-pipe on the driver's side. You can't miss the thing.

GuyST::

I also have a 94 and the last 2 State inspections (TX) - it had to be tested

When did you change yours - date / milage?

I have 183,000 and still havent had to change it. Ya your right - after thinking about it - the 94 only has 1 OS2.

my local Foreign Car parts house has it for $110.00 with the factory connnector / or for $62.00 and you splice the wires yourself.

Unfortunately,

Have you retrieved the DTC code from the ECU? if not then you might be on a wild goose chase. Get the code from ECU, a $15 Chilton manual will tell you how to retrieve it(and other info regarding ur car ;) ). That will be a good start.