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.
Drive Cycle F
| DTC | Item | Condition | Number of driving cycles on the detecting condition |
|---|---|---|---|
| P0111 | INTAKE AIR TEMPERATURE SENSOR 1 CIRCUIT RANGE/PERFORMANCE BANK 1 |
|
2 |
Diagnostic procedure:
- With the ignition switch ON (engine stopped), read the values in «Coolant Temp.» and «Intake Air Temp. Ref. to ENGINE (DIAGNOSTICS) (H4DO)>SUBARU SELECT MONITOR>OPERATION>DISPLAY CURRENT ENGINE DATA .
- If the values from step 1) satisfy the following conditions, idle the engine for two minutes or more.
Condition:
Engine coolant temperature - Intake air temperature ≤ 5°C (9°F)
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 at idling.
- Drive according to the drive pattern described below.NOTE:
- In pattern (2), it is acceptable to decelerate to less than 80 km/h (50 MPH) or to stop the vehicle depending on the traffic conditions. Drive the vehicle at 80 km/h (50 MPH) or more until the total driving time reaches or exceeds 15 minutes.
- There is no given transition time between idling and cruising.
- Driving at constant speed only on a downhill causes smaller engine load and may result in failure to obtain a right diagnostic result.
- If the ignition switch is turned to OFF during driving cycle F, perform this driving cycle again after satisfying the conditions listed in the table.
- Read the temporary code using the Subaru Select Monitor or general scan tool. Ref. to ENGINE (DIAGNOSTICS) (H4DO)>READ DIAGNOSTIC TROUBLE CODE (DTC)>OPERATION .
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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.
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