Refer to DTC P0172 for diagnostic procedure. Refer to DTC P0172 SYSTEM TOO RICH (BANK 1) , Diagnostic Procedure with Diagnostic Trouble Code (DTC).
Home/Subaru/Forester/Subaru Forester SH (2007-2011)/Repair manual/Testing & Diagnostics/DTC P0171 SYSTEM TOO LEAN (BANK 1)
Contents
Wiring diagrams Section: Testing & Diagnostics- Engine Controls - Engine (Diagnostics) (H4SO): Specifications
- Engine Controls - Engine (Diagnostics) (H4SO): Overview
- Engine Controls - Engine (Diagnostics) (H4SO): Diagnosis
- Engine Controls - Engine (Diagnostics) (H4SO): Wiring
- Engine Controls - Engine (Diagnostics) (H4SO): Other
- DTC P0171 SYSTEM TOO LEAN (BANK 1)
- DTC P0301 CYLINDER 1 MISFIRE DETECTED
- DTC P0302 CYLINDER 2 MISFIRE DETECTED
- DTC P0303 CYLINDER 3 MISFIRE DETECTED
- DTC P0462 FUEL LEVEL SENSOR "A" CIRCUIT LOW
- DTC P0600 SERIAL COMMUNICATION LINK
- DTC P0605 INTERNAL CONTROL MODULE READ ONLY MEMORY (ROM) ERROR
- DTC P0638 THROTTLE ACTUATOR CONTROL RANGE/PERFORMANCE (BANK 1)
- DTC P0700 TRANSMISSION CONTROL SYSTEM (MIL REQUEST)
- DTC P1160 RETURN SPRING FAILURE
- DTC P1492 EGR SOLENOID VALVE SIGNAL #1 CIRCUIT MALFUNCTION (LOW INPUT)
- DTC P1493 EGR SOLENOID VALVE SIGNAL #1 CIRCUIT MALFUNCTION (HIGH INPUT)
- DTC P1494 EGR SOLENOID VALVE SIGNAL #2 CIRCUIT MALFUNCTION (LOW INPUT)
- DTC P1495 EGR SOLENOID VALVE SIGNAL #2 CIRCUIT MALFUNCTION (HIGH INPUT)
- DTC P1496 EGR SOLENOID VALVE SIGNAL #3 CIRCUIT MALFUNCTION (LOW INPUT)
- DTC P1497 EGR SOLENOID VALVE SIGNAL #3 CIRCUIT MALFUNCTION (HIGH INPUT)
- DTC P2096 POST CATALYST FUEL TRIM SYSTEM TOO LEAN (BANK 1)
- DTC P2109 THROTTLE/PEDAL POSITION SENSOR "A" MINIMUM STOP PERFORMANCE
- Diagnostic Trouble Code (DTC) Detecting Criteria (H4SO): Overview
- Diagnostic Trouble Code (DTC) Detecting Criteria (H4SO): Diagnosis
- Diagnostic Trouble Code (DTC) Detecting Criteria (H4SO): Maintenance
- Diagnostic Trouble Code (DTC) Detecting Criteria (H4SO): Other
- Diagnostic Trouble Code (DTC) Detecting Criteria (H4DOTC): Overview
- Diagnostic Trouble Code (DTC) Detecting Criteria (H4DOTC): Diagnosis
- Diagnostic Trouble Code (DTC) Detecting Criteria (H4DOTC): Maintenance
- Diagnostic Trouble Code (DTC) Detecting Criteria (H4DOTC): Other
- Abbreviations
- Airbag
- Anti-Lock/traction Control
- Automatic HVAC System
- Automatic Trans
- Auxiliary Emission Control Systems
- Axle Shafts
- Basic Trouble Shooting
- Blowers, Superchargers & Turbochargers
- Brakes
- Charging System
- Check Lists
- Clutches Manual & Hydraulic
- Communication Devices
- Cooling Fan
- Cooling System (Mechanical)
- Cruise Control Systems
- Diagnostic Connector Locations
- Differentials & Drive Axles
- Door Locks & Anti-Theft Systems
- Drive Cycles
- Driveline/axles
- DTC Index
- Electrical Component Locations
- Emission Applications
- Engine
- Engine Control Systems
- Engine Performance
- Entertainment Systems
- Exhaust
- Exterior Body Panels
- Exterior Lights
- Exterior/interior Trim
- Fuel System
- Fuses & Circuit Breakers
- Gauges & Instrument Panels
- General Servicing - All Makes
- Heated Glass/defoggers
- Hoist/jack
- Horns
- Identification
- Ignition System
- Lubrication System
- Manual & Power Steering
- Manual HVAC System
- Manual Trans
- Mechanical
- Mechanical - Hydraulic
- Metric Conversions
- Mode 6
- Parking Brake System
- Reset Procedures
- Restraints Control Systems
- Seats
- Specifications
- Steering
- Sun Roof/t-Top/convertible Top
- Suspension Front
- Suspension Rear
- Testing & Diagnostics
- Traction Control Disable
- Transfer Case
- Transmission
- Transmission Control Systems
- Warning System
- Wheel & Tire System
- Wiper/washer Systems