LEMON Manuals
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Lexus
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2009
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ES 350
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Repair and Diagnosis
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Engine Performance
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System
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Engine Control (SFI) System (Diagnostic (Codes P0010-P043E))
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SFI System
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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)
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Typical Malfunction Thresholds
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Typical Malfunction Thresholds
FUEL TRIM:
EVAP purge-cut
Executing
Either following condition is met
Condition 1 or 2
1. Average between short-term fuel trim and long-term fuel trim
35% or more
2. Average between short-term fuel trim and long-term fuel trim
-35% or less