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Home >> Infiniti >> 2017 >> QX30 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (5 Of 5) >> DTC/Circuit Diagnosis >> DTC P2177: Air-Fuel Ratio >> DTC Description >> DTC Detection Logic
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DTC Detection Logic

DTC No. CONSULT screen terms DTC detecting condition
(Trouble diagnosis content) Malfunction type
P2177 00 System lean bank1
(System Too Lean Off Idle Bank 1)
NO SUBTYPE INFORMATION The mixture (cylinder bank 1) is too lean in partial load operation.
97 CMP/SYS OPR OBST OR BLKD The mixture (cylinder bank 1) is too lean in partial load operation. The system function is restricted.