Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2005 Subaru Outback RFACTORY OEM SERVICE PROCEDURE
Diagnostic Trouble Code (DTC) Detecting Criteria (H6DO)
- List of Diagnostic Trouble Code (DTC)
- Diagnostic Trouble Code (DTC) Detecting Criteria
- DTC P0011 Intake Camshaft Position Timing - Over-Advanced (Bank 1)
- DTC P0021 Intake Camshaft Position Timing - Over-Advanced (Bank 2)
- DTC P0026 Intake Valve Control Solenoid Circuit Range/Performance (Bank 1)
- DTC P0028 Intake Valve Control Solenoid Circuit Range/Performance (Bank 2)
- DTC P0030 Ho2S Heater Control Circuit (Bank 1 Sensor 1)
- DTC P0031 Ho2S Heater Control Circuit Low (Bank 1 Sensor 1)
- DTC P0032 Ho2S Heater Control Circuit High (Bank 1 Sensor 1)
- DTC P0037 Ho2S Heater Control Circuit Low (Bank 1 Sensor 2)
- DTC P0038 Ho2S Heater Control Circuit High (Bank 1 Sensor 2)
- DTC P0050 Ho2S Heater Control Circuit (Bank 2 Sensor 1)
- DTC P0051 Ho2S Heater Control Circuit Low (Bank 2 Sensor 1)
- DTC P0052 Ho2S Heater Control Circuit High (Bank 2 Sensor 1)
- DTC P0057 Ho2S Heater Control Circuit Low (Bank 2 Sensor 2)
- DTC P0058 Ho2S Heater Control Circuit High (Bank 2 Sensor 2)
- DTC P0068 Map/MAF - Throttle Position Correlation
- DTC P0076 Intake Valve Control Circuit Low (Bank 1)
- DTC P0077 Intake Valve Control Circuit High (Bank 1)
- DTC P0082 Intake Valve Control Circuit Low (Bank 2)
- DTC P0083 Intake Valve Control Circuit High (Bank 2)
- DTC P0101 Mass Or Volume Air Flow Circuit Range/Performance
- DTC P0102 Mass Or Volume Air Flow Circuit Low Input
- DTC P0103 Mass Or Volume Air Flow Circuit High Input
- DTC P0107 Manifold Absolute Pressure/Barometric Pressure Circuit Low Input
- DTC P0108 Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- DTC P0111 Intake Air Temperature Circuit Range/Performance
- DTC P0112 Intake Air Temperature Circuit Low Input
- DTC P0113 Intake Air Temperature Circuit High Input
- DTC P0117 Engine Coolant Temperature Circuit Low Input
- DTC P0118 Engine Coolant Temperature Circuit High Input
- DTC P0122 Throttle/Pedal Position Sensor/Switch "A" Circuit Low Input
- DTC P0123 Throttle/Pedal Position Sensor/Switch "A" Circuit High Input
- DTC P0125 Insufficient Engine Coolant Temperature For Closed Loop Fuel Control
- DTC P0126 Insufficient Engine Coolant Temperature For Stable Operation
- DTC P0128 Coolant Thermostat (Engine Coolant Temperature Below Thermostat Regulating Temperature)
- DTC P0131 O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)
- DTC P0132 O2 Sensor Circuit High Voltage (Bank 1 Sensor 1)
- DTC P0133 O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)
- DTC P0134 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
- DTC P0137 O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)
- DTC P0138 O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)
- DTC P0139 O2 Sensor Circuit Slow Response (Bank 1 Sensor 2)
- DTC P0151 O2 Sensor Circuit Low Voltage (Bank 2 Sensor 1)
- DTC P0152 O2 Sensor Circuit High Voltage (Bank 2 Sensor 1)
- DTC P0153 O2 Sensor Circuit Slow Response (Bank 2 Sensor 1)
- DTC P0154 O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)
- DTC P0157 O2 Sensor Circuit Low Voltage (Bank 2 Sensor 2)
- DTC P0158 O2 Sensor Circuit High Voltage (Bank 2 Sensor 2)
- DTC P0159 O2 Sensor Circuit Slow Response (Bank 2 Sensor 2)
- DTC P0171 System Too Lean (Bank 1)
- DTC P0172 System Too Rich (Bank 1)
- DTC P0174 System Too Lean (Bank 2)
- DTC P0175 System Too Rich (Bank 2)
- DTC P0181 Fuel Temperature Sensor "A" Circuit Range/Performance
- DTC P0182 Fuel Temperature Sensor "A" Circuit Low Input
- DTC P0183 Fuel Temperature Sensor "A" Circuit High Input
- DTC P0196 Engine Oil Temperature Sensor Circuit Range/Performance
- DTC P0197 Engine Oil Temperature Sensor Circuit Low
- DTC P0198 Engine Oil Temperature Sensor Circuit High
- DTC P0222 Throttle/Pedal Position Sensor/Switch "B" Circuit Low Input
- DTC P0223 Throttle/Pedal Position Sensor/Switch "B" Circuit High Input
- DTC P0230 Fuel Pump Primary Circuit
- DTC P0301 Cylinder 1 Misfire Detected
- DTC P0302 Cylinder 2 Misfire Detected
- DTC P0303 Cylinder 3 Misfire Detected
- DTC P0304 Cylinder 4 Misfire Detected
- DTC P0305 Cylinder 5 Misfire Detected
- DTC P0306 Cylinder 6 Misfire Detected
- DTC P0327 Knock Sensor 1 Circuit Low Input (Bank 1 Or Single Sensor)
- DTC P0328 Knock Sensor 1 Circuit High Input (Bank 1 Or Single Sensor)
- DTC P0332 Knock Sensor 2 Circuit Low Input (Bank 2)
- DTC P0333 Knock Sensor 2 Circuit High Input (Bank 2)
- DTC P0335 Crankshaft Position Sensor "A" Circuit
- DTC P0336 Crankshaft Position Sensor "A" Circuit Range/Performance
- DTC P0340 Camshaft Position Sensor "A" Circuit (Bank 1 Or Single Sensor)
- DTC P0345 Camshaft Position Sensor "A" Circuit (Bank 2)
- DTC P0420 Catalyst System Efficiency Below Threshold (Bank 1)
- DTC P0442 Evaporative Emission Control System Leak Detected (Small Leak)
- Outline Of Diagnosis
- Component Description
- Enable Condition
- General Driving Cycle
- Diagnostic Method
- 0.04-inch Diagnosis
- Diagnosing The CPC Open Fixation
- Diagnosing function of CPC
- Normal Operation
- Leak Diagnosis
- Diagnostic method
- Notes
- Mode A: (Estimation of evaporation gas yield)
- Mode B: (Seal negative pressure)
- Abnormality Judgment
- Mode C: (Check increasing pressure)
- Mode D: (Measurement of negative pressure changes)
- Mode A: (0 point correction)
- Mode B: (Introduce negative pressure)
- Mode C: (Hold negative pressure)
- Mode D: (Calculation of negative pressure variation)
- Mode E: (Calculation of evaporation gas yield)
- After Mode D
- 0.02-inch Diagnosis
- Normality Judgment
- DTC Clear Condition
- Malfunction Indicator Light Clear Condition
- Fail Safe
- ECM Operation At DTC Setting
- DTC P0447 Evaporative Emission Control System Vent Control Circuit Open
- DTC P0448 Evaporative Emission Control System Vent Control Circuit Shorted
- DTC P0451 Evaporative Emission Control System Pressure Sensor
- DTC P0452 Evaporative Emission Control System Pressure Sensor Low Input
- DTC P0453 Evaporative Emission Control System Pressure Sensor High Input
- DTC P0456 Evaporative Emission Control System Leak Detected (Very Small Leak)
- DTC P0457 Evaporative Emission Control System Leak Detected (Fuel Cap Loose/Off)
- DTC P0458 Evaporative Emission Control System Purge Control Valve Circuit Low
- DTC P0459 Evaporative Emission Control System Purge Control Valve Circuit High
- DTC P0461 Fuel Level Sensor Circuit Range/Performance
- DTC P0462 Fuel Level Sensor Circuit Low Input
- DTC P0463 Fuel Level Sensor Circuit High Input
- DTC P0464 Fuel Level Sensor Circuit Intermittent
- DTC P0483 Cooling Fan Rationality Check
- DTC P0500 Vehicle Speed Sensor
- DTC P0506 Idle Control System Rpm Lower Than Expected
- DTC P0507 Idle Control System Rpm Higher Than Expected
- DTC P0512 Starter Request Circuit
- DTC P0513 Incorrect Immobilizer Key
- DTC P0519 Idle Control System Malfunction (Fail-Safe)
- DTC P0600 Serial Communication Link
- DTC P0604 Internal Control Module Random Access Memory (Ram) Error
- DTC P0605 Internal Control Module Read Only Memory (ROM) Error
- DTC P0607 Control Module Performance
- DTC P0638 Throttle Actuator Control Range/Performance (Bank 1)
- DTC P0691 Cooling Fan 1 Control Circuit Low
- DTC P0692 Cooling Fan 1 Control Circuit High
- DTC P0700 Transmission Control System (Mil Request)
- DTC P1152 02 Sensor Circuit Range/Performance (Low) (Bank 1 Sensor 1)
- DTC P1153 02 Sensor Circuit Range/Performance (High) (Bank 1 Sensor 1)
- DTC P1154 02 Sensor Circuit Range/Performance (Low) (Bank 2 Sensor 1)
- DTC P1155 02 Sensor Circuit Range/Performance (High) (Bank 2 Sensor 1)
- DTC P1160 Return Spring Failure
- DTC P1400 Fuel Tank Pressure Control Solenoid Valve Circuit Low
- DTC P1420 Fuel Tank Pressure Control Sol. Valve Circuit High
- DTC P1443 Vent Control Solenoid Valve Function Problem
- DTC P1446 Fuel Tank Sensor Control Valve Circuit Low
- DTC P1447 Fuel Tank Sensor Control Valve Circuit High
- DTC P1518 Starter Switch Circuit Low Input
- DTC P1560 Back-Up Voltage Circuit Malfunction
- DTC P1570 Antenna
- DTC P1571 Reference Code Incompatibility
- DTC P1572 IMM Circuit Failure (Except Antenna Circuit)
- DTC P1574 Key Communication Failure
- DTC P1576 EGI Control Module EEPROM
- DTC P1577 IMM Control Module EEPROM
- DTC P1578 Meter Failure
- DTC P2088 OCV Solenoid Valve Signal A Circuit Open (Bank 1)
- DTC P2089 OCV Solenoid Valve Signal A Circuit Short (Bank 1)
- DTC P2092 OCV Solenoid Valve Signal A Circuit Open (Bank 2)
- DTC P2093 OCV Solenoid Valve Signal A Circuit Short (Bank 2)
- DTC P2096 Post Catalyst Fuel Trim System Too Lean Bank 1
- DTC P2097 Post Catalyst Fuel Trim System Too Rich Bank 1
- DTC P2098 Post Catalyst Fuel Trim System Too Lean Bank 2
- DTC P2099 Post Catalyst Fuel Trim System Too Rich Bank 2
- DTC P2101 Throttle Actuator Control Motor Circuit Range/Performance
- DTC P2102 Throttle Actuator Control Motor Circuit Low
- DTC P2103 Throttle Actuator Control Motor Circuit High
- DTC P2109 Throttle/Pedal Position Sensor A Minimum Stop Performance
- DTC P2122 Throttle/Pedal Position Sensor/Switch "D" Circuit Low Input
- DTC P2123 Throttle/Pedal Position Sensor/Switch "D" Circuit High Input
- DTC P2127 Throttle/Pedal Position Sensor/Switch "E" Low Input
- DTC P2128 Throttle/Pedal Position Sensor/Switch "E" Circuit High Input
- DTC P2135 Throttle/Pedal Position Sensor/Switch "A/ "B" Voltage Rationality
- DTC P2138 Throttle/Pedal Position Sensor/Switch "D"/ "E" Voltage Rationality
- DTC P2227 Barometric Pressure Circuit Range/Performance
- DTC P2228 Barometric Pressure Circuit Low Input
- DTC P2229 Barometric Pressure Circuit High Input
- DTC P2503 Charging System Voltage Low
- DTC P2504 Charging System Voltage High
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.