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Home >> Acura >> 2004 >> 3.5RL >> Repair and Diagnosis >> Engine Performance >> System >> Engine Performance System Self-Diagnostics >> Diagnostic Tests >> DTC P0171: Fuel System Too Lean (Right Bank - Bank 1); DTC P0172: Fuel System Too Rich (Right Bank - Bank 1); DTC P0174: Fuel System Too Lean (Left Bank - Bank 2) Or DTC P0175: Fuel System Too Rich (Left Bank - Bank 2) (2004 3.5RL) >> Notes

DTC P0171: Fuel System Too Lean (Right Bank - Bank 1); DTC P0172: Fuel System Too Rich (Right Bank - Bank 1); DTC P0174: Fuel System Too Lean (Left Bank - Bank 2) Or DTC P0175: Fuel System Too Rich (Left Bank - Bank 2) (2004 3.5RL): Notes

NOTE: If some of the DTCs listed below are stored at the same time as DTC P0171, P0172, P0174 and/or P0175, troubleshoot those DTCs first, then troubleshoot DTC P0171, P0172, P0174 and/or P0175:
  • P0107, P0108, P1128, P1129:  MAP Sensor
  • P0135:  Right Primary HO2S Heater (Bank 1 - Sensor 1)
  • P0137, P0138:  Secondary HO2S (Sensor 2)
  • P0141:  Secondary HO2S Heater (Sensor 2)
  • P0155:  Left Primary HO2S Heater (Bank 2 - Sensor 1)
  • P0401:  EGR Flow Insufficient
  • P0404:  EGR Valve Lift Insufficient
  • P0406:  EGR Valve Position Sensor High Voltage
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