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.
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HOMESERVICE MANUALSSUBARU2016LEGACY 2.5IREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 15 (ENGINE CONTROLS (H6DO) (DIAGNOSTICS) (4 OF 5))
2016 Subaru Legacy 2.5i
Section 15 (Engine Controls (H6DO) (Diagnostics) (4 Of 5))
2016 Subaru Legacy 2.5iSECTION Section 15 (Engine Controls (H6DO) (Diagnostics) (4 Of 5))
WARNING: This page is about a different variant/trim than selected.
- Diagnostic Procedure With Diagnostic Trouble Code (DTC)
- DTC P0441 EVAP System (CPC) Incorrect Purge Flow
- DTC P0451 EVAP System (CPC) Pressure Sensor/Switch Circuit Range/Performance
- DTC P0452 EVAP System (CPC) Pressure Sensor/Switch Circuit Low
- DTC P0453 EVAP System (CPC) Pressure Sensor/Switch Circuit High
- DTC P0455 EVAP System (CPC) Leak Detected (Large Leak)
- DTC P0456 EVAP System (CPC) Leak Detected (Very Small Leak)
- DTC P0458 EVAP System (CPC) Purge Control Valve "A" Circuit Low
- DTC P0459 EVAP System (CPC) Purge Control Valve "A" Circuit High
- DTC P0461 Fuel Level Sensor "A" Circuit Range/Performance
- DTC P0462 Fuel Level Sensor "A" Circuit Low
- DTC P0463 Fuel Level Sensor "A" Circuit High
- DTC P0500 Vehicle Speed Sensor "A" Circuit
- DTC P0506 Idle Control System Rpm - Lower Than Expected
- DTC P0507 Idle Control System Rpm - Higher Than Expected
- DTC P050A Cold Start Idle Control System Performance
- DTC P050B Cold Start Ignition Timing Performance
- DTC P0512 Starter (Switch) Request Circuit
- DTC P0560 System Voltage
- DTC P0604 Internal Control Module Random Access Memory (Ram) Error
- DTC P0605 Internal Control Module Read Only Memory (ROM) Error
- DTC P0606 Control Module Processor
- DTC P060A Internal Control Module Monitoring Processor Performance
- DTC P060B Internal Control Module A/D Processing Performance
- DTC P0616 Starter Relay "A" Circuit Low
- DTC P0617 Starter Relay "A" Circuit High
- DTC P062F Internal Control Module EEPROM Error
- DTC P0685 ECM/Pcm Power Relay Control Circuit/Open
- DTC P0700 Transmission Control System (Mil Request)
- DTC P081A Starter Disable Circuit Low
- DTC P0851 Park/Neutral Switch Input Circuit Low
- DTC P0852 Park/Neutral Switch Input Circuit High
- DTC P1160 Throttle Return Spring
- DTC P1449 EVAP System Clog Detected (Air Filter)
- DTC P1451 EVAP System Clog Detected (Pipe)
- DTC P1492 Coil 1 EGR "A" Control Circuit Low
- DTC P1493 Coil 1 EGR "A" Control Circuit High
- DTC P1494 Coil 2 EGR "A" Control Circuit Low
- DTC P1495 Coil 2 EGR "A" Control Circuit High
- DTC P1496 Coil 3 EGR "A" Control Circuit Low
- DTC P1497 Coil 3 EGR "A" Control Circuit High
- DTC P1498 Coil 4 EGR "A" Control Circuit Low
- DTC P1499 Coil 4 EGR "A" Control Circuit High
RENDER: 1.0x
NO RELATED
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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.