Here is an clip from www.hmaservice.com about p0133

DTC
Diagnostic item

P0133
Oxygen Sensor Circuit Slow Response (Bank1, Sensor1)



FAILURE CONDITIONS [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.
b.. 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.


--
Gerald Lawson
ASE Certified Master Auto Technician
ASE Certified Undercar Specialist
Hyundai Senior Master Technician
Mitsubishi Master Technician



"James D Thompson" <jaydeet@inna.net> wrote in message
news:3f1f0f19.5544037@news.cis.dfn.de...
> I got the little orange light on my 2000 Accent, so I checked and got
> code p0133. What's p0133?
>
> David Thompson
>
> "The humans founded America, mastered the nuclear forces, and destroyed
> the original Mars about thirty thousand years ago."
> "So George Washington was there when they split the atom?"
> "Could have been."
>
> -from "Triumph of the Terrans", copyright 24L1042
>