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Home >> Toyota >> 2006 >> Corolla CE, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Control System (SFI) (2ZZ-GE) - Diagnostics) >> DTC P0171, P0172: System Too Lean/Rich (Bank 1) >> Typical Enabling Conditions

Typical Enabling Conditions

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TYPICAL ENABLING CONDITIONS

Monitor runs whenever these DTCs not present See LIST OF DISABLE A MONITOR 
Battery voltage 11 V or more
Fuel system Closed loop (for 13 seconds or more)
Air-fuel ratio learning control enabling warm up condition Met
Either of the following conditions (a) or (b) met:  
(a) Engine RPM Less than 1,100 rpm
(b) Intake air amount per revolution 0.15 gm/rev or more