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CEL, 'Circuit Low Volts (Bank 1 Sensor 1 & 2) 850

Hey Guys and Gals:

Put up a post last week on "System too Rich" (Bank 1) and was grateful for the help. I replaced the front O2 sensor but about 100 miles later the CEL came on again. Got out the scanner and now I'm reading "Circuit Low Volts" (Bank 1 Sensor 1) and "Circuit Low Volts" (Bank 1 Sensor 2). Now need a little help in what I have to replace next.

Thanks in advance!!

Henry

97-850/101, 98-S70/95k







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