Question about 1999 Buick Regal
P and ! warning lights on..what's it mean?
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Posted on Jan 02, 2017
The error that I'm showing for error code P1133 is
P1133 Heated Oxygen Sensor (HO2S) insufficient switching bank 1 sensor 1(Rear Bank). I would suggest having both of your Oxygen Sensors replaced if you haven't already had that done. Hope this helps. Thanks for an honest rating and for using FixYa.
Posted on May 19, 2009
That fault indicates a problem in the electronic cooling fan circuit. More specificly the output driver in the onboard computer has detected a problem with the control circuit of the electronic fans. First inspect for correct operation of both radiator mounted fans.
Posted on Mar 12, 2010
look in the filler bottle and their is a switch which has a float on the end ,its stuck thats all their is no fancy computer electrics on this vehicle
Posted on Mar 05, 2011
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