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fuel pressure rail sensor is where you are going to want to start you troubleshooting. That is code 119404. If its stuck/shot/shorted it will give you the issues you are describing. it would also cause ancillary voltage codes like you are getting. How many miles on your car? Are you the original owner? Any previous issues? Are you tuned?
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2019 x5 50i - current
2016 340i THP stage 2 - gone but not forgotten.
Last edited by njdangelo; 05-06-2021 at 09:10 AM..
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