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 MANUALSSUBARU2014OUTBACK 2.5I, STANDARD TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMDIAGNOSTIC TROUBLE CODE (DTC) DETECTING CRITERIA (H4DO)
2014 Subaru Outback 2.5i, Standard Trans
Diagnostic Trouble Code (DTC) Detecting Criteria (H4DO)
2014 Subaru Outback 2.5i, Standard TransSECTION Diagnostic Trouble Code (DTC) Detecting Criteria (H4DO)
- List of Diagnostic Trouble Code (DTC)
- Diagnostic Trouble Code (DTC) Detecting Criteria
- DTC B1570 Antenna
- DTC B1571 Reference Code Incompatibility
- DTC B1572 IMM Circuit Failure (Except Antenna Circuit)
- DTC B1574 Key Communication Failure
- DTC B1575 Incorrect Immobilizer Key
- DTC B1576 EGI Control Module EEPROM
- DTC B1577 IMM Control Module EEPROM
- DTC B1578 Meter Failure
- DTC P000A A Camshaft Position Slow Response (Bank 1)
- DTC P000C A Camshaft Position Slow Response (Bank 2)
- DTC P0010 "A" Camshaft Position Actuator Circuit/Open (Bank 1)
- DTC P0011 Intake Camshaft Position - Timing Over-Advanced Or System Performance (Bank 1)
- DTC P0016 Crankshaft Position - Camshaft Position Correlation (Bank1)
- DTC P0018 Crankshaft Position - Camshaft Position Correlation (Bank2)
- DTC P0020 "A" Camshaft Position Actuator Circuit/Open (Bank 2)
- DTC P0021 Intake Camshaft Position - Timing Over-Advanced Or System 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 P0068 Map/MAF - Throttle Position Correlation
- 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 Sensor Range/Performance Problem
- DTC P0112 Intake Air Temperature Sensor 1 Circuit Low
- DTC P0113 Intake Air Temperature Sensor 1 Circuit High
- DTC P0116 Engine Coolant Temperature Sensor 1 Circuit Range/Performance
- DTC P0117 Engine Coolant Temperature Circuit Low
- DTC P0118 Engine Coolant Temperature Circuit High
- DTC P0122 Throttle/Pedal Position Sensor/Switch "A" Circuit Low
- DTC P0123 Throttle/Pedal Position Sensor/Switch "A" Circuit High
- DTC P0125 Insufficient Coolant Temperature For Closed Loop Fuel Control
- 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 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 P013A O2 Sensor Slow Response - Rich To Lean (Bank 1 Sensor 2)
- DTC P013B O2 Sensor Slow Response - Lean To Rich (Bank 1 Sensor 2)
- DTC P013E O2 Sensor Delayed Response - Rich To Lean (Bank 1 Sensor 2)
- DTC P013F O2 Sensor Delayed Response - Lean To Rich (Bank 1 Sensor 2)
- DTC P0140 O2 Sensor Circuit No Activity Detected (Bank1 Sensor2)
- DTC P0141 O2 Sensor Heater Circuit (Bank1 Sensor2)
- DTC P014C O2 Sensor Slow Response - Rich To Lean (Bank 1 Sensor 1)
- DTC P014D O2 Sensor Slow Response - Lean To Rich (Bank 1 Sensor 1)
- DTC P015A O2 Sensor Delayed Response - Rich To Lean (Bank 1 Sensor 1)
- DTC P015B O2 Sensor Delayed Response - Lean To Rich (Bank 1 Sensor 1)
- DTC P0171 System Too Lean (Bank 1)
- DTC P0172 System Too Rich (Bank 1)
- DTC P0196 Engine Oil Temperature Sensor Circuit Range/Performance
- DTC P0197 Engine Oil Temperature Sensor Low
- DTC P0198 Engine Oil Temperature Sensor High
- DTC P0201 Injector #1
- DTC P0202 Injector #2
- DTC P0203 Injector #3
- DTC P0204 Injector #4
- DTC P0222 Throttle/Pedal Position Sensor/Switch "B" Circuit Low
- DTC P0223 Throttle/Pedal Position Sensor/Switch "B" Circuit High
- DTC P0300 Random/Multiple Cylinder Misfire Detected
- 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 P0327 Knock Sensor 1 Circuit Low (Bank 1 Or Single Sensor)
- DTC P0328 Knock Sensor 1 Circuit High (Bank 1 Or Single Sensor)
- 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 P0341 Camshaft Position Sensor "A" Circuit Range/Performance (Bank 1 Or Single Sensor)
- DTC P0345 Camshaft Position Sensor "A" Circuit (Bank 2)
- DTC P0346 Camshaft Position Sensor "A" Circuit Range/Performance (Bank 2)
- DTC P0351 Ignition Coil A Primary/Secondary Circuit
- DTC P0352 Ignition Coil B Primary/Secondary Circuit
- DTC P0353 Ignition Coil C Primary/Secondary Circuit
- DTC P0354 Ignition Coil D Primary/Secondary Circuit
- DTC P0400 Exhaust Gas RECIRCULATION Flow
- DTC P0420 Catalyst System Efficiency Below Threshold (Bank 1)
- DTC P0441 Evaporative Emission Cont. SYS. Incorrect Purge Flow
- DTC P0451 Evaporative Emission System Pressure Sensor/Switch Range/Performance
- DTC P0452 Evaporative Emission System Pressure Sensor/Switch Low
- DTC P0453 Evaporative Emission System Pressure Sensor/Switch High
- DTC P0455 Evaporative Emission System Leak Detected (Large Leak)
- Outline Of Diagnosis
- Component Description
- Enable Conditions
- General Driving Cycle
- Diagnostic Method
- Notes
- Mode A (Vacuum pump operation confirmation and characteristics stability)
- Mode B (Measurement of reference pressure for setting the target negative pressure)
- Mode C (Switching valve operation confirmation)
- Mode D (Clogging of pipe diagnosis and leak pressure measurement)
- Mode E (Measurement of reference pressure for judgment)
- DTC P0456 Evaporative Emission Control System Leak Detected (Very Small Leak)
- DTC P0458 Evaporative Emission System Purge Control Valve Circuit Low
- DTC P0459 Evaporative Emission System Purge Control Valve 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"
- DTC P0506 Idle Air Control System Rpm Lower Than Expected
- DTC P0507 Idle Air Control System Rpm Higher Than Expected
- DTC P050A Cold Start Idle Air Control System Performance
- DTC P050B Cold Start Ignition Timing Performance
- DTC P0512 Starter 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 Circuit Low
- DTC P0617 Starter Relay Circuit High
- DTC P062F Internal Control Module EEPROM Error
- DTC P0700 Transmission Control System (Mil Request)
- DTC P081A Starter Disable Circuit Low
- DTC P0851 Park/Neutral Switch Input Circuit Low (At Model)
- DTC P0851 Neutral Switch Input Circuit Low (Mt Model)
- DTC P0852 Park/Neutral Switch Input Circuit High (At Model)
- DTC P0852 Neutral Switch Input Circuit High (Mt Model)
- DTC P1160 Return Spring Failure
- DTC P1449 Evaporative Emission Cont. SYS. Air Filter Clog
- DTC P1451 Evaporative Emission Cont. SYS.
- 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 P1498 EGR Solenoid Valve Signal #4 Circuit Malfunction (Low Input)
- DTC P1499 EGR Solenoid Valve Signal #4 Circuit Malfunction (High Input)
- DTC P2004 Intake Manifold Runner Control Stuck Open (Bank 1)
- DTC P2005 Intake Manifold Runner Control Stuck Open (Bank 2)
- DTC P2006 Intake Manifold Runner Control Stuck Closed (Bank 1)
- DTC P2007 Intake Manifold Runner Control Stuck Closed (Bank 2)
- DTC P2009 Intake Manifold Runner Control Circuit Low (Bank 1)
- DTC P2012 Intake Manifold Runner Control Circuit Low (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 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 P2119 Throttle Actuator Control Throttle Body Range/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" Circuit Low Input
- DTC P2128 Throttle/Pedal Position Sensor/Switch "E" Circuit High Input
- DTC P2135 Throttle/Pedal Position Sensor/Switch "A"/"B" Voltage Correlation
- DTC P2138 Throttle/Pedal Position Sensor/Switch "D"/"E" Voltage Correlation
- DTC P2195 O2 Sensor Signal Biased/Stuck Lean (Bank 1 Sensor 1)
- DTC P2196 O2 Sensor Signal Biased/Stuck Rich (Bank 1 Sensor 1)
- DTC P219A Bank 1 Air-Fuel Ratio Imbalance
- DTC P2401 Evaporative Emission System Leak Detection Pump Control Circuit Low
- DTC P2402 Evaporative Emission System Leak Detection Pump Control Circuit High
- DTC P2404 Evaporative Emission System Leak Detection Pump Sense Circuit Range/Performance
- DTC P2419 Evaporative Emission System Switching Valve Control Circuit Low
- DTC P2420 Evaporative Emission System Switching Valve Control Circuit High
- DTC P2610 ECM/Pcm Internal Engine Off Timer Performance
- DTC U0073 Control Module Communication Bus "A" Off
- DTC U0101 Lost Communication With TCM
- DTC U0122 Lost Communication With Vehicle Dynamics Control Module
- DTC U0140 Lost Communication With Body Control Module
- DTC U0402 Invalid Data Received From TCM
- DTC U0416 Invalid Data Received From Vehicle Dynamics Control Module
- DTC U0422 Invalid Data Received From Body Control Module
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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.