O2 Sensor Circuit Low Voltage 1995 Turbo Wagon

[Unknown]

1995 Volvo Turbo Wagon.....

Light will come on about every 200 miles after reset..

could both be bad or do I have other problems??


P0131
O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)
P0137
O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)

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