Subaru Outback — OBD2 codes & common problems
Look up any check-engine / OBD2 code for the Subaru Outback and get a diagnosis tuned to its known failure patterns, TSBs, and NHTSA recalls. Pick your model year on any code page below.
Wagon 24 NHTSA recalls on record 1,651 owner complaints
See the full Subaru Outback recalls & common problems breakdown — most-reported systems and recalls by model year.
About the Subaru Outback
The Subaru Outback (2010-2014, 2015-2019, 2020-2024) was commonly sold with 2.5L H4, 2.4L Turbo H4, 3.6L H6. Common trims include Base, Premium, Limited, Touring, Wilderness, Onyx Edition. The diagnostic guides below account for these powertrains where the failure pattern differs.
Diagnostic codes for the Subaru Outback
- P0011 — Intake Cam Over-Advanced (Bank 1, VVT)
- P0012 — Intake Cam Over-Retarded (Bank 1, VVT)
- P0013 — Exhaust Cam Actuator Circuit Fault (Bank 1)
- P0014 — Exhaust Cam Over-Advanced (Bank 1, VVT)
- P0016 — Crank/Cam Correlation Fault (Bank 1 Intake)
- P0017 — Crank/Cam Correlation (Bank 1 Exhaust)
- P0101 — MAF Sensor Range / Performance
- P0102 — MAF Sensor Low Input
- P0113 — Intake Air Temperature High Input
- P0118 — Coolant Temp Sensor High Input
- P0121 — Throttle Position Sensor Range / Performance
- P0125 — Coolant Too Cold for Closed-Loop Fuel Control
- P0128 — Engine Not Reaching Operating Temperature
- P0131 — O2 Sensor Low Voltage (Bank 1 Upstream)
- P0133 — O2 Sensor Slow Response (Bank 1 Upstream)
- P0135 — O2 Sensor Heater Circuit (Bank 1 Upstream)
- P0136 — Post-Cat O2 Sensor Circuit Fault (Bank 1)
- P0138 — Post-Cat O2 Sensor High Voltage (Bank 1 Downstream)
- P0141 — Post-Cat O2 Heater Circuit (Bank 1 Downstream)
- P0171 — Fuel System Too Lean (Bank 1)
- P0172 — Fuel System Too Rich (Bank 1)
- P0174 — Fuel System Too Lean (Bank 2)
- P0300 — Random or Multiple Cylinder Misfire
- P0301 — Cylinder 1 Misfire
- P0325 — Knock Sensor 1 Circuit Fault
- P0335 — Crankshaft Position Sensor Circuit Fault
- P0340 — Camshaft Position Sensor Circuit Fault
- P0341 — Camshaft Position Sensor Range / Performance
- P0401 — EGR Flow Insufficient
- P0411 — Secondary Air Injection Insufficient Flow
- P0420 — Catalyst Efficiency Below Threshold
- P0430 — Catalyst Efficiency Below Threshold (Bank 2)
- P0440 — EVAP System Malfunction (Generic)
- P0442 — EVAP Small Leak Detected
- P0446 — EVAP Vent Control Circuit Fault
- P0455 — EVAP Large or Gross Leak Detected
- P0456 — EVAP Very Small Leak Detected
- P0496 — EVAP High Purge Flow / Stuck-Open Purge Valve
- P0497 — EVAP Low Purge Flow
- P0500 — Vehicle Speed Sensor Malfunction
- P0507 — Idle Higher Than Expected
- P0521 — Oil Pressure Sensor Range / Performance
- P0606 — PCM Internal Processor Fault
- P0700 — Transmission Control System Malfunction
- P0720 — Transmission Output Speed Sensor Malfunction
- P0741 — Torque Converter Clutch Stuck Off
- P0750 — Shift Solenoid A Malfunction
- P2096 — Post-Cat Trim Lean (Bank 1)
- P2187 — System Too Lean at Idle (Bank 1)
- P2270 — Post-Cat O2 Stuck Lean (Bank 1 Downstream)
Diagnose by model year
Jump straight to the generation that matches your Outback: