How many oxygen sensors are in a 2003 Saturn vue v6

Question edited for clarity.
Question moved to model category.

As a general rule, with a laterally positioned V6 , Bank 1 is always closest to the firewall Bank 2 is closest to the headlights.

Sensor 1 is ALWAYS the one in the Exhaust Manifold, and Sensor 2 is ALWAYS the one AFTER the Catalytic converter.

confirmed here

02 sensor "bank 1 sensor 1" - Saturn Vue

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Mar 12, 2015 - Bank 1 is on the firewall side. Sensor 1 is in the Exhaust Manifold. Chazberry is offline ...

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I looked at info for 4 cylinder engine, 2.2L
You have to remove starter motor to get at it, so says my database.

HAVE YOU CHANGED THE PLUGS AND WIRES THAT IS THE FIRST THING I WOULD DO

Replace your map sensor

Fig. Heated Oxygen (HO2S) location (bank 1, sensors 1 & 2) - 3.5L engine




Fig. Heated Oxygen (HO2S) location (bank 2, sensors 1 & 2) - 3.5L engine


Hope helps.

curious to know if you got this solved. Guessing downstream o2 sensor. did your vue idle high? act like it was getting too much gas? Let me know please.

the coolant temp sensor is located at rear of engine oppisit the timing belt under rear of intake manifold.

unscrew old one and replace with new one should be plug and play wiring but put a little never seize on the threads of the new one before installing

Buy it new from many places Search Saturn Parts call local Dealer .
Happy Easter

how to replace alternator on 2003 saturn vue 3.0 v6