How many oxygen sensors are on a 1997 Dodge Caravan?

The 2.4l 4cylinder and all 3 six cylinder engines have one before the catalytic converter, one after.

If one of these have failed, your check engine light will be on. the codes will be from P0130-P0147 and P0150-P0167. There are lots of codes, and one will identify the problem.

Like eferrell01 said, you will have one before the catalytic converter and one after, so if its a V-6 there could be four, and if its a four cylinder there are two. You really want to run diagnostics on the vehicle to find out which one is faulty. That will save you some cash as then you won't have to replace all the oxygen sensors.

you do have two sensors on that one,the one that usually goes bad first is the one before the converter ,but have a scan done on it and be sure before you replace those because their not cheap any more to replace,you said that the light stayed on 80% of the time and that's usually the cause of that happening especially if you got a code from it on the sensor, you,l usually notice a slightly richer smell from the exhaust when a sensor is bad on it ,make sure you replace the right one though because in some cases i have seen one make the other one read bad on it so make sure its giving you the right code for the right sensor,other wise you,ll wind up replacing both of them to solve this,another thing that will cause an 0-2 sensor to read bad sometimes is a bad set of plugs not burning the gas right ,that will set off an 0-2 sensor on those, good luck on it.

There should only be one. Usually screwed into the exhaust pipe, near the exhaust manifold.