Fuel System B1 (Fuel System Status Bank 1)

Air/fuel of bank 1 ratio feedback loop status displayed as one of the followings.

OL: Open-loop has not yet satisfied engine conditions (ECT > 10 °C (50 °F), IAT, TP, oxygen sensor/system = OK) to go closed loop.

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

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

OL-FAULT: Open-loop due to detected system fault.