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Home >> Scion >> 2006 >> xA Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (1NZ-FE) >> SFI System >> DTC P0171 System Too Lean (Bank 1); DTC P0172 System Too Rich (Bank 1) >> Typical Enabling Conditions

Typical Enabling Conditions

TYPICAL ENABLING CONDITIONS

Monitor runs whenever these DTCs not present P0010 (VVT OCV 1)
P0011 (VVT system 1 - advance)
P0012 (VVT system 1 - retard)
P0031, P0032 (heated oxygen sensor 1)
P0100 - P0103 (MAF meter)
P0115 - P0118 (ECT sensor)
P0120 - P0123 (TP sensor)
P0125 (insufficient ECT for closed loop)
P0130 (heated oxygen sensor 1)
P0134 (heated oxygen sensor 1)
P0171, P0172 (fuel system)
P0300 - P0304 (misfire)
P0335 (crankshaft position sensor)
P0441 - P0456 (EVAP system)
P0500 (VSS)
Battery voltage 11 V or more
Fuel system Closed loop (for more than 13 seconds)
Either of following conditions (a) or (b) met: -
(a) Engine RPM Less than 1,100 rpm
(b) Intake air amount per revolution 0.15 g/rev or more
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