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P0157 HO2S Circuit Low Voltage Bank 2 Sensor 2
I have a GMC that keeps setting a P0157 code intermittently. When you drive the truck and watch the data, here is what I see. B1S2 voltage moves from .57 to .68 volts. B2S2 moves from .05 to .06 voltage. It has the original catalytic converters and and it a ne... Login to read more. 
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| VIN | 1GTGK29UXX |
| Engine | 6.0 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
1999 GMC Sierra 2500 SL 6.0L
| VIN | 1GTGK29UXX |
| Engine | 6.0 L |
| Trans | 4-speed Automatic (Electronic) |
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