P1089 Code

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Skeetercrunch

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I posted this is a Duramax forum and figured I would post here too.....
My 2024 Suburban is throwing a code P1089. Its has less than 1500 miles on it. I took it to the dealership and they say it has gasoline in the diesel. I don't believe gas in diesel fuel is the issue. (It runs great) I believe it is something else. Here is a list of all the codes that it is throwing. What do you guys think or recommend? (BTW - I did a search and didn't find anything similar).


CodeDescriptionFailure CodeStatus
B1B1EFront Floor Console Motor0x92Active
P1089Fuel Rail Pressure Performance During Deceleration Fuel Cut Off0x00Active
P138C
(Nothing listed)0x00Pending
U0146
Lost communication with Central Gateway Module0x00Active
U3000Control Module Watchdog/safety Control Malfunction
 

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