Skip to content

OBD II Codes, OBD 2 Codes

  • Home
  • OBD2 (P0001-P0999)
  • OBD2 (P1000-P2000)
  • OBD2 (P2001-P3500)
  • OBD2 (U0001-U2500)
  • OBD2 (B0001-B2800)
  • OBD2 (C0001-C3000)

Tag: P0171

P0171 2003 FORD ESCORT System Too Lean Bank 1

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 Tech notes

Read More P0171 2003 FORD ESCORT System Too Lean Bank 1
Posted in OBDII Powertrain(P) Codes    Tagged ford, P0171   

P0171 JEEP Fuel System 1/1 Lean

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 Tech notes

Read More P0171 JEEP Fuel System 1/1 Lean
Posted in OBDII Powertrain(P) Codes    Tagged jeep, P0171   

P0171 BMW Mixture Control System Too Lean

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 Tech notes

Read More P0171 BMW Mixture Control System Too Lean
Posted in OBDII Powertrain(P) Codes    Tagged BMW, P0171   

P0171 ACURA Fuel Injection System Too Lean Bank 1

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 Tech notes

Read More P0171 ACURA Fuel Injection System Too Lean Bank 1
Posted in OBDII Powertrain(P) Codes    Tagged acura, P0171   

P0171 DODGE Fuel System 1/1 Lean

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 Tech notes

Read More P0171 DODGE Fuel System 1/1 Lean
Posted in OBDII Powertrain(P) Codes    Tagged dodge, P0171   

P0171 CHRYSLER Fuel System 1/1 Lean

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 Tech notes

Read More P0171 CHRYSLER Fuel System 1/1 Lean
Posted in OBDII Powertrain(P) Codes    Tagged chrysler, P0171   

P0171 HYUNDAI System Too Lean Bank 1

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 Tech notes

Read More P0171 HYUNDAI System Too Lean Bank 1
Posted in OBDII Powertrain(P) Codes    Tagged hyundai, P0171   

P0171 HONDA Fuel Injection System Too Lean Bank 1

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 Tech notes

Read More P0171 HONDA Fuel Injection System Too Lean Bank 1
Posted in OBDII Powertrain(P) Codes    Tagged honda, P0171   

P0171 INFINITI Fuel Injection System Too Lean Bank 1

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 Tech notes

Read More P0171 INFINITI Fuel Injection System Too Lean Bank 1
Posted in OBDII Powertrain(P) Codes    Tagged infiniti, P0171   

P0171 ISUZU Fuel Trim System Lean Bank 1

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 Tech notes

Read More P0171 ISUZU Fuel Trim System Lean Bank 1
Posted in OBDII Powertrain(P) Codes    Tagged ISUZU, P0171   

P0171 LEXUS Air/Fuel Mixture System Lean Bank 1

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 Tech notes

Read More P0171 LEXUS Air/Fuel Mixture System Lean Bank 1
Posted in OBDII Powertrain(P) Codes    Tagged lexus, P0171   

P0171 KIA Bank 1 System Too Lean

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 Tech notes

Read More P0171 KIA Bank 1 System Too Lean
Posted in OBDII Powertrain(P) Codes    Tagged kia, P0171   

P0171 MITSUBISHI System Too Lean Cylinders 1-4

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 Tech notes

Read More P0171 MITSUBISHI System Too Lean Cylinders 1-4
Posted in OBDII Powertrain(P) Codes    Tagged MITSUBISHI, P0171   

P0171 MAZDA Lean Air/Fuel Ratio Bank 1

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 Tech notes

Read More P0171 MAZDA Lean Air/Fuel Ratio Bank 1
Posted in OBDII Powertrain(P) Codes    Tagged MAZDA, P0171   

P0171 SCION Air/Fuel Mixture System Lean Bank 1

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 Tech notes

Read More P0171 SCION Air/Fuel Mixture System Lean Bank 1
Posted in OBDII Powertrain(P) Codes    Tagged P0171, scion   

P0171 System Too Lean Bank 1

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 Tech notes

Read More P0171 System Too Lean Bank 1
Posted in OBDII Powertrain(P) Codes    Tagged P0171   

P0171 JAGUAR System Too Lean Bank 1

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 Tech notes

Read More P0171 JAGUAR System Too Lean Bank 1
Posted in OBDII Powertrain(P) Codes    Tagged JAGUAR, P0171   

P0171 SUBARU System Too Lean Bank 1

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 Tech notes

Read More P0171 SUBARU System Too Lean Bank 1
Posted in OBDII Powertrain(P) Codes    Tagged P0171, SUBARU   

P0171 SAAB System Too Lean Bank 1

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 Tech notes

Read More P0171 SAAB System Too Lean Bank 1
Posted in OBDII Powertrain(P) Codes    Tagged P0171, SAAB   

P0171 VOLKSWAGEN System Too Lean Bank 1

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 Tech notes

Read More P0171 VOLKSWAGEN System Too Lean Bank 1
Posted in OBDII Powertrain(P) Codes    Tagged P0171, VOLKSWAGEN   

Posts navigation

← Older posts

Categories

  • OBD II Codes FAQs
  • OBD II Wiki
  • OBDII Body(B) Codes
  • OBDII Chassis(C) Codes
  • OBDII Network(U) Codes
  • OBDII Powertrain(P) Codes

Pages

  • OBD2 (B0001-B2800)
  • OBD2 (C0001-C3000)
  • OBD2 (P0001-P0999)
  • OBD2 (P1000-P2000)
  • OBD2 (P2001-P3500)
  • OBD2 (U0001-U2500)

Vehicle

acura AUDI BMW buick cadillac chevrolet chrysler dodge ford gmc honda hummer hyundai infiniti ISUZU JAGUAR jeep kia lexus MAZDA MITSUBISHI nissan P0101 P0102 P0122 P0123 P0171 P0174 P0302 P0303 P0304 P0305 P0306 P0335 P0340 P0720 P1111 pontiac saturn scion SUBARU SUZUKI toyota VOLKSWAGEN VOLVO
Copyright © 2025 OBD II Codes, OBD 2 Codes