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FUEL TRIM RICH WITH P0131
Car came in with a p0131 oxygen sensor low voltage. Oxygen sensor had been replaced. Observed o2 sensor graph and had fluctuations with both high and low voltage. LT fuel trim was at -18 at idle and normal while driving around 0 to -3. Fuel pressure is normal ... Login to read more. 
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21 Replies Received
21 Replies Received
| Engine | 3.8 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
2004 Pontiac Grand Prix GT1 3.8L
| Engine | 3.8 L |
| Trans | 4-speed Automatic (Electronic) |
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