Code 0137. bank one sensor 2 ' low volt' + check engine light is on AGAIN??

2000 CHEVROLET SILVERADO
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NCPADDOCK
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Problem with 2000 Chevrolet Silverado 1500:

we have replaced sencer, cat converter, exhaust air valves = EVERYTHING has been replaced.
It just passed smog. Check engine lite came back after 3 days ( smog shop checked wirering & sensor ALL ok)
Please help.
Mar 6, 2012 at 6:46 PM
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