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Home >> Toyota >> 2009 >> Tacoma Base, 4D Pickup, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control System (1GR-FE) >> SFI System >> DTC P0171 System Too Lean (Bank 1); DTC P0172 System Too Rich (Bank 1); DTC P0174 System Too Lean (Bank 2); DTC P0175 System Too Rich (Bank 2) >> Typical Enabling Conditions
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Typical Enabling Conditions

Fuel-trim 

TYPICAL ENABLING CONDITIONS

Monitor runs whenever following DTCs not present P0010, P0020 (OCV Bank 1, 2)
P0011, P0021 (VVT System - advance)
P0012, P0022 (VVT System - retard)
P0016, P0018 (VVT system - misalignment)
P0031, P0032, P0051, P0052 (A/F sensor heater - Sensor 1)
P0102, P0103 (MAF meter)
P0115, P0117, P0118 (ECT sensor)
P0120 - P0123, P0220, P0222, P0223, P2135 (TP sensor)
P0125 (Insufficient ECT for closed loop)
P0335 (CKP sensor)
P0340, P0342, P0343, P0345, P0347, P0348 (VVT sensor)
P0351 - P0356 (Igniter)
P0500 (VSS)
Fuel system status Closed-loop
Battery voltage 11 V or more
Either of following conditions 1 or 2 set -
1. Engine RPM Less than 1100 rpm
2. Intake air amount per revolution 0.22 g/rev or more
Catalyst monitor No executed
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