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You need an OBD2 scanner to get more information. Fuel trims and other readings can point you towards a vacuum leak, exhaust leak, or something else. I spent $23 on a Bafx Bluetooth scanner on Amazon. I have an Android phone and use the Car Scanner app. Long and short term fuel trims should be near zero. O2 sensor voltages should be in specific ranges. I was able to find YouTube videos to diagnose almost everything that could be wrong with my P2096 Bank 1 too lean.


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