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Home >> Toyota >> 2017 >> Highlander LE Plus, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 72 (SFI System [2GR-FXE] - Diagnostic Codes - (Hybrid) (2 Of 3)) >> 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) [02/2014 - 11/2016] >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

WARNING: This page is about a different car, the 2016 Toyota Highlander, 2015 Toyota Highlander, and 2014 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
P0171, P0172, P0174 AND P0175: FUEL-TRIM LEAN/RICH

EVAP purge-cut Executing
Either of the following conditions is met 1 or 2
1. Average between short-term fuel trim and long-term fuel trim 35% or higher (varies with engine coolant temperature)
2. Average between short-term fuel trim and long-term fuel trim -35% or less (varies with engine coolant temperature)
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