Fuel System B1 (Fuel System Bank-1 Status) Fuel System B2 (Fuel System Bank-2 Status)

Air/fuel ratio feedback loop status displayed as one of the followings.

OPEN: Open-loop has not yet satisfied conditions to go closed loop.

CLOSED: Closed-loop using oxygen sensor(s) as feedback for fuel control.

OPEN-DRIVE COND: Open-loop due to driving conditions (Power enrichment, etc).

OPEN SYS FAULT: Open-loop due to detected system fault.