hi can anyone tell me if there are 2 oxygen sensors on a 1994 civic as keep getting cel and been to honda they have told me that its a o2 sensor but i replaced one the lambda sensor on the manifold about 3 months ago and they are telling me there is another in the exhaust but cant locate it, its not in the cat or on the branches of the exhaust manifold, so confused now and fed up with getting a cel any help appreciated

 

im pretty sure there is one near the cat. just wait for someone that knows more about it to come along and they will be happy to help you out.