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.
2019 Subaru WRX BaseFACTORY OEM SERVICE PROCEDURE
Drive Cycle R
| DTC | Item | Condition | Number of driving cycles on the detecting condition |
|---|---|---|---|
| P219A | BANK 1 AIR-FUEL RATIO IMBALANCE | - | 2 |
WARNING:
When performing the drive cycle R on the public road, be very careful of the traffic condition and the safe driving must be the high priority.
- Check the data in condition column of table by using the Subaru Select Monitor or general scan tool.NOTE:
- Subaru Select Monitor For detailed operation procedures, refer to "Current Data Display For Engine". Refer to ENGINE (DIAGNOSTICS) (EXCEPT FOR STI)>SUBARU SELECT MONITOR>OPERATION>DISPLAY CURRENT ENGINE DATA .
- General scan tool For detailed operation procedures, refer to the general scan tool operation manual.
- Keep the engine at idle for at least 30 seconds in a fully warm-up condition.
- Start the driving.
- With the gear position in the 4th, take 10 seconds to accelerate from 1500 rpm to 4000 rpm.
- Decelerate to 1500 rpm in the 4th gear position. (There is no restrictions to the deceleration duration and how to use the brake.)
- Repeat 4) and 5) 10 times (end when the temporary code is acquired).
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.
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