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03 pontiac O2 sensor bias
This Pontiac is staying in open loop and seting codes p0130,133 and 134 all B1S1 O2 sensor. Scanner shows this sensor bouncing around(+_ .05v) .45volts. Voltmeter shows 5 v on both sensor legs with he .05 volts higher on the sensor high leg. Engine temp is nor... Login to read more. 
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| Engine | 3.8 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
2003 Pontiac Bonneville SSEi 3.8L
| Engine | 3.8 L |
| Trans | 4-speed Automatic (Electronic) |
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