I had my 2000 Dodge Caravan 2.4L checked today and the codes came up to be the Bank 1 O2 Sensor bad. I looked under the hood on the left (Bank 2 is on the right and I've put that one in before) and I couldn't find it. Where is it and is it easy to get to? If not, how hard is it to get to?
Thanks!

 

You only have two o2 sensors. Are the codes 1/1 or 1/2? The o2 sensor on the manifold, before the cat is the 1/1.

 

i dont know. the guy at the part store who did the test just told me it was the Bank 1 o2 sensor and we discussed where the two of them were. he told me bank 1 is on the left when facing the engine. i cant find it. i know where the other one is (bank 2 on the right) but its not the one thats broken. however i did not get a code..should i go back and get it?

 

Bank 1 or bank 2 is for a "V" engine, not a "straight" engine like the in-line 2.4 four cylinder.

I'd go back and have them re-read the codes or find another shop that will read them for you.

My guess would be the first O2 which is upstream of the cat vice down stream?

But I don't think O2 sensors fail that often. Could be the sensor is only re-acting to something else.

 

yea i replaced the upstream o2 sensor. i mean it has 210k on it im not surprised. so far engine light staying off. we'll see..