p0133 code 2002 accent

What does this code mean??? HELP!!!!!!!!!!!!!!!!!!!!!!!

 

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From the hmaservice.com web site...

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FAILURE CONDITIONS [FOR P0133]

(FOR P0133)
The ECM will set P0133 and MIL will turn on if the ECM does not sense the
following conditions during two driving cycles:

1.. Over a period of 2 minutes, the ECM must sense a fuel compensation
factor greater 85% or less than 95%:
2.. The ECM must make some correction in the air/fuel ratio when:
a.. Engine RPM is between 1600 and 3200 RPM.
Engine load range is between 1.35 and 3.4 milliseconds.
Catalyst temperature is above 372°C (702°F).
System is in closed loop.

This code indicates the engine air fuel ratio is not being adjusted by the
front oxygen sensor signal or the ECM as expected to do so, or not adjusted
as often as expected to do so once the engine is warmed or under normal
engine use.

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Also from the same site...

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There is a TSB # 06-36-004 that deals with this code. It advises to verify
the integrity of the front exhaust pipe between the front and rear oxygen
sensors. A leak in the pipe can affect the ECM diagnostic logic for the
front oxygen sensor.

 

Bad O2 sensor