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.
2012 Subaru Forester X, Automatic TransFACTORY OEM SERVICE PROCEDURE
Inspection Mode: Procedure: Notes
Perform the diagnosis shown in the following DTC table.
When performing the diagnosis not listed in "List of Diagnostic Trouble Code (DTC)", refer to the item on the drive cycle. < Refer to DRIVE CYCLE . >
DTC ITEM CHART
| DTC | Item | Condition |
|---|---|---|
| P0011 | Intake Camshaft Position - Timing Over-Advanced or System Performance (Bank 1) | - |
| P0016 | Crankshaft Position - Camshaft Position Correlation (Bank 1) | - |
| P0018 | Crankshaft Position - Camshaft Position Correlation (Bank 2) | - |
| P0021 | Intake Camshaft Position - Timing Over-Advanced or System Performance (Bank 2) | - |
| P0031 | HO2S Heater Control Circuit Low (Bank 1 Sensor 1) | - |
| P0032 | HO2S Heater Control Circuit High (Bank 1 Sensor 1) | - |
| P0037 | HO2S Heater Control Circuit Low (Bank 1 Sensor 2) | - |
| P0038 | HO2S Heater Control Circuit High (Bank 1 Sensor 2) | - |
| P0102 | Mass or Volume Air Flow Circuit Low Input | - |
| P0103 | Mass or Volume Air Flow Circuit High Input | - |
| P0107 | Manifold Absolute Pressure/Barometric Pressure Circuit Low Input | - |
| P0108 | Manifold Absolute Pressure/Barometric Pressure Circuit High Input | - |
| P0112 | Intake Air Temperature Sensor 1 Circuit Low | - |
| P0113 | Intake Air Temperature Sensor 1 Circuit High | - |
| P0117 | Engine Coolant Temperature Circuit Low | - |
| P0118 | Engine Coolant Temperature Circuit High | - |
| P0122 | Throttle/Pedal Position Sensor/Switch "A" Circuit Low | - |
| P0123 | Throttle/Pedal Position Sensor/Switch "A" Circuit High | - |
| P0131 | O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1) | - |
| P0132 | O2 Sensor Circuit High Voltage (Bank 1 Sensor 1) | - |
| P0137 | O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2) | - |
| P0138 | O2 Sensor Circuit High Voltage (Bank 1 Sensor 2) | - |
| P0140 | O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2) | - |
| P0182 | Fuel Temperature Sensor "A" Circuit Low Input | - |
| P0183 | Fuel Temperature Sensor "A" Circuit High Input | - |
| P0201 | Injector #1 | - |
| P0202 | Injector #2 | - |
| P0203 | Injector #3 | - |
| P0204 | Injector #4 | - |
| P0222 | Throttle/Pedal Position Sensor/Switch "B" Circuit Low | - |
| P0223 | Throttle/Pedal Position Sensor/Switch "B" Circuit High | - |
| P0230 | Fuel Pump Primary Circuit | - |
| P0245 | Turbo/Super Charger Wastegate Solenoid "A" Low | - |
| P0327 | Knock Sensor 1 Circuit Low (Bank 1 or Single Sensor) | - |
| P0328 | Knock Sensor 1 Circuit High (Bank 1 or Single Sensor) | - |
| P0335 | Crankshaft Position Sensor "A" Circuit | - |
| P0336 | Crankshaft Position Sensor "A" Circuit Range/Performance | - |
| P0340 | Camshaft Position Sensor "A" Circuit (Bank 1 or Single Sensor) | - |
| P0345 | Camshaft Position Sensor "A" Circuit (Bank 2) | - |
| P0351 | Ignition Coil A Primary/Secondary Circuit | - |
| P0352 | Ignition Coil B Primary/Secondary Circuit | - |
| P0353 | Ignition Coil C Primary/Secondary Circuit | - |
| P0354 | Ignition Coil D Primary/Secondary Circuit | - |
| P0413 | Secondary Air Injection System Switching Valve "A" Circuit Open | - |
| P0416 | Secondary Air Injection System Switching Valve "B" Circuit Open | - |
| P0418 | Secondary Air Injection System Control "A" Circuit | - |
| P0447 | Evaporative Emission Control System Vent Control Circuit Open | - |
| P0448 | Evaporative Emission Control System Vent Control Circuit Shorted | - |
| P0452 | Evaporative Emission Control System Pressure Sensor Low Input | - |
| P0453 | Evaporative Emission Control System Pressure Sensor High Input | - |
| P0458 | Evaporative Emission System Purge Control Valve Circuit Low | - |
| P0462 | Fuel Level Sensor "A" Circuit Low | - |
| P0463 | Fuel Level Sensor "A" Circuit High | - |
| P0500 | Vehicle Speed Sensor "A" | - |
| P0512 | Starter Request Circuit | - |
| P0513 | Incorrect Immobilizer Key | - |
| P0604 | Internal Control Module Random Access Memory (RAM) Error | - |
| P0605 | Internal Control Module Read Only Memory (ROM) Error | - |
| P0607 | Throttle Control System Circuit Range/Performance | - |
| P0638 | Throttle Actuator Control Range/Performance (Bank 1) | - |
| P0700 | Transmission Control System (MIL Request) | - |
| P0851 | Park/Neutral Switch Input Circuit Low | - |
| P0852 | Park/Neutral Switch Input Circuit High | - |
| P1152 | O2 Sensor Circuit Range/Performance (Low) (Bank 1 Sensor 1) | - |
| P1153 | O2 Sensor Circuit Range/Performance (High) (Bank 1 Sensor 1) | - |
| P1160 | Return Spring Failure | - |
| P1400 | Fuel Tank Pressure Control Solenoid Valve Circuit Low | - |
| P1410 | Secondary Air Injection System Switching Valve Stuck Open | - |
| P1420 | Fuel Tank Pressure Control Sol. Valve Circuit High | - |
| P1458 | Canister Purge Control Solenoid Valve 2 | - |
| P1459 | Canister Purge Control Solenoid Valve 2 | - |
| P1491 | Positive Crankcase Ventilation (Blow-by) Function Problem | - |
| P1518 | Starter Switch Circuit Low Input | - |
| P1560 | Back-Up Voltage Circuit Malfunction | - |
| P1570 | Antenna | - |
| P1571 | Reference Code Incompatibility | - |
| P1572 | IMM Circuit Failure (Except Antenna Circuit) | - |
| P1574 | Key Communication Failure | - |
| P1576 | EGI Control Module EEPROM | - |
| P1577 | IMM Control Module EEPROM | - |
| P1578 | Meter Failure | - |
| P2006 | Intake Manifold Runner Control Stuck Closed (Bank 1) | - |
| P2007 | Intake Manifold Runner Control Stuck Closed (Bank 2) | - |
| P2008 | Intake Manifold Runner Control Circuit / Open (Bank 1) | - |
| P2009 | Intake Manifold Runner Control Circuit Low (Bank 1) | - |
| P2011 | Intake Manifold Runner Control Circuit/Open (Bank 2) | - |
| P2012 | Intake Manifold Runner Control Circuit Low (Bank 2) | - |
| P2016 | Intake Manifold Runner Position Sensor / Switch Circuit Low (Bank 1) | - |
| P2017 | Intake Manifold Runner Position Sensor/Switch Circuit High (Bank 1) | - |
| P2021 | Intake Manifold Runner Position Sensor / Switch Circuit Low (Bank 2) | - |
| P2022 | Intake Manifold Runner Position Sensor / Switch Circuit High (Bank 2) | - |
| P2088 | Intake Camshaft Position Actuator Control Circuit Low (Bank 1) | - |
| P2089 | Intake Camshaft Position Actuator Control Circuit High (Bank 1) | - |
| P2092 | Intake Camshaft Position Actuator Control Circuit Low (Bank 2) | - |
| P2093 | Intake Camshaft Position Actuator Control Circuit High (Bank 2) | - |
| P2101 | Throttle Actuator Control Motor Circuit Range/Performance | - |
| P2102 | Throttle Actuator Control Motor Circuit Low | - |
| P2103 | Throttle Actuator Control Motor Circuit High | - |
| P2109 | Throttle/Pedal Position Sensor "A" Minimum Stop Performance | - |
| P2122 | Throttle/Pedal Position Sensor/Switch "D" Circuit Low Input | - |
| P2123 | Throttle/Pedal Position Sensor/Switch "D" Circuit High Input | - |
| P2127 | Throttle/Pedal Position Sensor/Switch "E" Circuit Low Input | - |
| P2128 | Throttle/Pedal Position Sensor/Switch "E" Circuit High Input | - |
| P2135 | Throttle/Pedal Position Sensor/Switch "A"/"B" Voltage Correlation | - |
| P2138 | Throttle/Pedal Position Sensor/Switch "D"/"E" Voltage Correlation | - |
| P2419 | Evaporative Emission System Switching Valve Control Circuit Low | - |
| P2420 | Evaporative Emission System Switching Valve Control Circuit High | - |
| P2431 | Secondary Air Injection System Air Flow/Pressure Sensor Circuit Range/Performance | - |
| P2432 | Secondary Air Injection System Air Flow/Pressure Sensor Circuit Low | - |
| P2433 | Secondary Air Injection System Air Flow/Pressure Sensor Circuit High | - |
| P2444 | Secondary Air Injection System Pump Stuck On | - |
| U0073 | CAN Failure, Bus "OFF Detection | - |
| U0101 | CAN (TCU) Data not Loaded | - |
| U0122 | CAN (VDC) Data not Loaded | - |
| U0140 | CAN (BCU) Data not Loaded | - |
| U0402 | CAN (TCU) Data Abnormal | - |
| U0416 | CAN (VDC) Data Abnormal | - |
| U0422 | CAN (BCU) Data Abnormal | - |
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.