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Home >> Subaru >> 2021 >> Ascent Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostics) (2 Of 4) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0171: System Too Lean Bank 1 >> Notes

DTC P0171: System Too Lean Bank 1: Notes

NOTE: For the diagnostic procedure, refer to DTC P0172. Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>Diagnostic Procedure with Diagnostic Trouble Code (DTC)>DTC P0172 SYSTEM TOO RICH BANK 1 .