Re: 1997 grand am

In article <JZmuj.30$8Y2.15@[EMAIL PROTECTED]
>, changbah@[EMAIL PROTECTED]
 says...
> 
> 
> cj wrote:
> > greetings, my 1997 grand am 2.4l twin cam check engine light is on.
went 
> > to auto zone and the gal told me that my ox sensor is bad but i need
to 
> > know whether the sensor is before or after the catalytic convertor.
can 
> > anyone tell me? also, if i never fixed the sensor what harm would it
do?
> > thanks, cj
> > 
> 
> the error code is PO141
> thanks, cj

DTC P0141 HO2S Heater Performance Sensor 2

That is P(zero)141 which is downstream of the converter.

Replacing it may not correct the issue. 
The wiring, connector, and the circuit should be inspected.