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.
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HOMESERVICE MANUALSSUBARU2022IMPREZA BASE, 4D SEDAN, AUTOMATIC CVT TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 16 (P-HEV HYBRID POWERTRAIN CONTROL SYSTEM (DIAGNOSTICS) (1 OF 4))GENERAL DESCRIPTIONNOTE
2022 Subaru Impreza Base, 4D Sedan, Automatic CVT Trans
Section 16 (P-HEV Hybrid Powertrain Control System (Diagnostics) (1 Of 4)): General Description: Note
2022 Subaru Impreza Base, 4D Sedan, Automatic CVT TransSECTION Note
WARNING: This page is about a different car, the 2022 Subaru Crosstrek. However, it is still accessible from the selected car via links, so may be relevant.
| Term | Definition |
|---|---|
| Monitor Description | Description of what the Hybrid vehicle control ECU assembly monitors and how to detects malfunctions (monitoring purpose and its details). |
| Related DTCs | A group of diagnostic trouble codes that are output by the Hybrid vehicle control ECU assembly based on the same malfunction detection logic. |
| Typical Enabling Conditions | Preconditions that allow the Hybrid vehicle control ECU assembly to detect malfunctions. With all preconditions satisfied, the Hybrid vehicle control ECU assembly stores DTCs when the monitored value(s) exceeds malfunction threshold(s). |
| Sequence of operation | Order of monitor priority, applied if multiple sensors and components are involved in a single malfunction detection process. Each sensor and component are monitored in turn and subsequent items are not monitored until the previous detection operation completes. |
| Required sensors/components | Sensors and components used by the Hybrid vehicle control ECU assembly to detect each malfunction. |
| Frequency of operation | Number of times the Hybrid vehicle control ECU assembly checks for each malfunction during each driving cycle. "Once per driving cycle" means that the Hybrid vehicle control ECU assembly only checks for malfunctions once during a single driving cycle. "Continuous" means that the Hybrid vehicle control ECU assembly checks for malfunctions whenever enabling conditions are met. |
| Duration | Minimum time for which the Hybrid vehicle control ECU assembly must detect continuous deviation in monitored value(s) in order to store a DTC. Timing begins when typical enabling conditions are met. |
| Malfunction Thresholds | Value beyond which the Hybrid vehicle control ECU assembly determines malfunctions exist and stores DTCs. |
| MIL operation | Timing of MIL illumination after a malfunction is detected. "Immediate" means that the Hybrid vehicle control ECU assembly illuminates the MIL as soon as a malfunction is detected. "2 driving cycles" means that the Hybrid vehicle control ECU assembly illuminates the MIL if the same malfunction is detected again during the next driving cycle. |
| Intellectual property | This information is not necessary for troubleshooting. |
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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.