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.
2022 Subaru WRX Base, Automatic CVT TransFACTORY OEM SERVICE PROCEDURE
Engine Control System (Diagnostics) (2 Of 4)
- Diagnostic Procedure with Diagnostic Trouble Code (DTC)
- DTC P0171: System Too Lean Bank 1
- DTC P0172: System Too Rich Bank 1
- DTC P0191: Fuel Rail Pressure Sensor Circuit Range/Performance Bank 1
- DTC P0192: Fuel Rail Pressure Sensor Circuit Low Bank 1
- DTC P0193: Fuel Rail Pressure Sensor Circuit High Bank 1
- DTC P0196: Engine Oil Temperature Sensor "A" Range/Performance
- DTC P0197: Engine Oil Temperature Sensor "A" Circuit Low
- DTC P0198: Engine Oil Temperature Sensor "A" Circuit High
- DTC P0222: Throttle/Pedal Position Sensor/Switch "B" Circuit Low
- DTC P0223: Throttle/Pedal Position Sensor/Switch "B" Circuit High
- DTC P0230: Fuel Pump Primary Circuit
- DTC P0234: Turbocharger/Supercharger "A" OVERBOOST Condition
- DTC P023F: Fuel Pump Secondary Circuit/Open
- DTC P0244: Turbocharger/Supercharger WASTEGATE Solenoid "A" Range/Performance
- DTC P0299: Turbocharger/Supercharger "A" UNDERBOOST Condition
- 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/Combustion Vibration Sensor 1 Circuit Low Bank 1 Or Single Sensor
- DTC P0328: Knock/Combustion Vibration Sensor 1 Circuit High Bank 1 Or Single Sensor
- DTC P0332: Knock/Combustion Vibration Sensor 2 Circuit Low Bank 2
- DTC P0333: Knock/Combustion Vibration Sensor 2 Circuit High 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 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 Control Circuit/Open
- DTC P0352: Ignition Coil "B" Primary Control Circuit/Open
- DTC P0353: Ignition Coil "C" Primary Control Circuit/Open
- DTC P0354: Ignition Coil "D" Primary Control Circuit/Open
- DTC P0365: Camshaft Position Sensor "B" Circuit Bank 1
- DTC P0366: Camshaft Position Sensor "B" Circuit Range/Performance Bank 1
- DTC P0390: Camshaft Position Sensor "B" Circuit Bank 2
- DTC P0391: Camshaft Position Sensor "B" Circuit Range/Performance Bank 2
- DTC P0401: EGR Abnormal (EGR Amount Too Small)
- DTC P0402: EGR "A" Flow Excessive Detected
- DTC P0420: Catalyst System Efficiency Below Threshold Bank 1
- DTC P0441: EVAP System (CPC) Incorrect Purge Flow
- 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 P0480: Fan 1 Control Circuit
- DTC P0481: Fan 2 Control Circuit
- DTC P04AE: EVAP System Purge Control Valve "B" Performance/Stuck Open
- DTC P04DB: Crankcase Ventilation System (PCV) Disconnected
- DTC P04F0: EVAP System High Pressure Purge Line (CPC2) Performance
- DTC P04F1: EVAP System Low Pressure Purge Line Performance
- 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 P0562: System Voltage Low
- DTC P0563: System Voltage High
- 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 P062D: Fuel Injector Driver Circuit Performance Bank 1
- DTC P062F: Internal Control Module EEPROM Error
- DTC P065A: Generator/Alternator System Performance
- DTC P0685: ECM/Pcm Power Relay Control Circuit/Open
- DTC P06B1: Sensor Power Supply "A" Circuit Low
- DTC P06B2: Sensor Power Supply "A" Circuit High
- DTC P06B4: Sensor Power Supply "B" Circuit Low
- DTC P06B5: Sensor Power Supply "B" Circuit 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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.