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.
2021 Subaru Crosstrek HybridFACTORY OEM SERVICE PROCEDURE
Inspection Mode Am
| DTC | Description and trouble part | Condition | Number of driving cycles on the detecting condition |
|---|---|---|---|
| P0071 | AMBIENT AIR TEMPERATURE SENSOR CIRCUIT "A" RANGE/PERFORMANCE | 6 hours or more have elapsed since ignition switch is OFF under a completely warmed up condition. | 2 |
| P0111 | INTAKE AIR TEMPERATURE SENSOR 1 CIRCUIT RANGE/PERFORMANCE BANK 1 | 2 | |
| P0116 | ENGINE COOLANT TEMPERATURE SENSOR 1 CIRCUIT RANGE/PERFORMANCE | 2 | |
| P0196 | ENGINE OIL TEMPERATURE SENSOR "A" RANGE/PERFORMANCE | 2 | |
| P040B | EGR TEMPERATURE SENSOR "A" CIRCUIT RANGE/PERFORMANCE | 2 | |
| P050A | COLD START IDLE CONTROL SYSTEM PERFORMANCE | - | 2 |
| P050B | COLD START IGNITION TIMING PERFORMANCE | - | 2 |
| P24B9 | EVAP SYSTEM LEAK DETECTION PUMP PRESSURE SENSOR CIRCUIT RANGE/PERFORMANCE | 60 seconds or more have elapsed since ignition switch is OFF. | 2 |
- Check that the battery voltage is 12 V or more and fuel remains approx. half [20 - 40 L (5.3 - 10.6 US gal, 4.4 - 8.8 Imp gal)].
- Using the Subaru Select Monitor, perform the clear memory of [Engine]. Ref. to COMMON (DIAG)>CLEAR MEMORY .
- With the ignition switch ON (engine stopped), read the values in [Engine Coolant Temperature] and [Intake Air Temp.] using the Subaru Select Monitor. Ref. to COMMON (DIAG)>DATA MONITOR .
- If the values from step 3) satisfy the following conditions, navigate to Inspection Mode for measuring Exhaust Gas. Ref. to P-HEV HYBRID POWERTRAIN CONTROL (DIAGNOSTICS)>WORK SUPPORT>OPERATION>SERVICE MODE
.
Condition:
|Engine coolant temperature - Intake air temperature | 5°C (9°F) or more
NOTE:- If the conditions are not satisfied, turn the ignition switch to OFF and wait until the parameters are satisfied .
- Hold the select lever in "P" range or "N? range during engine start .
- If it is necessary to run the engine for 10 minutes or more, fasten the driver's seat belt .
- Start the engine and wait for 30 seconds.
- Read the temporary code using the Subaru Select Monitor or general scan tool. Ref. to COMMON (DIAG)>DIAGNOSTIC TROUBLE CODE (DTC) .
Factory Service Tools
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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.