Steve Mackie wrote:
> Possible Causes of a P1133 on this vehicle (verbatum from ALLDATA):
>
> An intermittent connection or corrosion in the O2S-1 harness connector can
> set this DTC. Use scan tool to monitor O2S-1 voltage with engine running at
> normal operating temperature while wiggling the signal and ground. Make sure
> the sensor is tight.
> The most probable cause for DTC P1133 is contamination. Check for obvious
> contamitation (oil, fuel or engine coolant) by removing sensor. Identify and
> correct the cause of the contamination if contaminated. Replace the O2S-1.
>

Thanks Steve for your time and effort. I've entered this into my notes.

Ed