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P0171 - System Too Lean Bank 1

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3 What does this mean?

Possible causes

  • Intake air leaks
  • Faulty front heated oxygen sensor
  • Ignition misfiring
  • Faulty fuel injectors
  • Exhaust gas leaks
  • Incorrect fuel pressure
  • Lack of fuel
  • Faulty Mass Air Flow (MAF) sensor
  • Incorrect Positive Crankcase Ventilation (PCV) hose connection
What does this mean?
OBDII Code P0171 - System Too Lean Bank 1 - kvjournal.ru

P0171 Information for specific makes

P0171 ACURA Fuel Injection System Too Lean Bank 1
P0171 AUDI System Too Lean Bank 1
P0171 BMW Mixture Control System Too Lean
P0171 BUICK Fuel Trim System Lean Bank 1
P0171 CADILLAC Fuel Trim System Lean Bank 1
P0171 CHEVROLET Fuel Trim System Lean Bank 1
P0171 CHRYSLER Fuel System 1/1 Lean
P0171 DODGE Fuel System 1/1 Lean
P0171 FORD Fuel Injection System Too Lean Bank 1
P0171 GMC Fuel Trim System Lean Bank 1
P0171 HONDA Fuel Injection System Too Lean Bank 1
P0171 HUMMER Fuel Trim System Lean Bank 1
P0171 HYUNDAI System Too Lean Bank 1
P0171 INFINITI Fuel Injection System Too Lean Bank 1
P0171 ISUZU Fuel Trim System Lean Bank 1
P0171 JAGUAR System Too Lean Bank 1
P0171 JEEP Fuel System 1/1 Lean
P0171 KIA Bank 1 System Too Lean
P0171 LAND-ROVER System Too Lean Bank 1
P0171 LEXUS Air/Fuel Mixture System Lean Bank 1
P0171 LINCOLN Fuel Injection System Too Lean Bank 1
P0171 MAZDA Lean Air/Fuel Ratio Bank 1
P0171 MERCEDES-BENZ System Too Lean Bank 1
P0171 MERCURY Fuel Injection System Too Lean Bank 1
P0171 MINI Mixture Control System Too Lean
P0171 MITSUBISHI System Too Lean Cylinders 1-4
P0171 NISSAN Fuel Injection System Too Lean Bank 1
P0171 OLDSMOBILE Fuel Trim System Lean Bank 1
P0171 PONTIAC Fuel Trim System Lean Bank 1
P0171 SAAB System Too Lean Bank 1
P0171 SATURN Fuel Trim System Lean Bank 1
P0171 SCION Air/Fuel Mixture System Lean Bank 1
P0171 SUBARU System Too Lean Bank 1
P0171 SUZUKI System Too Lean Bank 1
P0171 TOYOTA Air/Fuel Mixture System Lean Bank 1
P0171 VOLKSWAGEN System Too Lean Bank 1

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