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 20 (P-HEV HYBRID POWERTRAIN CONTROL SYSTEM (DIAGNOSTICS) (4 OF 4))
2022 Subaru Impreza Base, 4D Sedan, Automatic CVT Trans
Section 20 (P-HEV Hybrid Powertrain Control System (Diagnostics) (4 Of 4))
2022 Subaru Impreza Base, 4D Sedan, Automatic CVT TransSECTION Section 20 (P-HEV Hybrid Powertrain Control System (Diagnostics) (4 Of 4))
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.
- Diagnostic Procedure With Diagnostic Trouble Code (DTC)
- DTC P274A-1C: Transmission Fluid Temperature Sensor "C" Voltage Out Of Range
- DTC P274A-1F: Transmission Fluid Temperature Sensor "C" Circuit Intermittent
- DTC P3004-49: High Voltage Power Resource Circuit Short During Pre-Charge
- DTC P308F-49: High Voltage Charging Circuit Short During Pre-Charge
- DTC P309F-49: High Voltage Charging Circuit Consumption Circuit Short
- DTC P3107-11: Lost Communication With Airbag System Control Module Circuit Short To Ground
- DTC P3107-15: Lost Communication With Airbag System Control Module Circuit Short To Auxiliary Battery Or Open
- DTC P3107-64: Lost Communication With Airbag System Control Module Signal Plausibility Failure
- DTC P3123-87: Lost Communication With Drive Motor Control Module "A" From Hybrid/EV Control Module Missing Message
- DTC P3147-79: Transmission (Shaft) Mechanical Linkage Failure
- DTC P314A-31: Motor Electronics Coolant Pump "A" No Signal
- DTC P31B3-00: Hybrid/EV Battery Voltage High
- DTC P320F-00: Ac Charging Overpower
- DTC P321D-17: Charger Circuit Voltage Above Threshold
- DTC P321E-9F: Motor/Generator Shutdown Signal Stuck Off
- DTC P33B9-9F: Motor/Generator Shutdown Signal (Hybrid/EV Side) Stuck Off
- DTC P33BF-9F: Motor/Generator Shutdown Signal (Mg Side) Stuck Off
- DTC P33CF-49: Hybrid/EV Battery Voltage System Isolation Internal Electronic Failure Abnormal Area Detection Failure
- DTC B1572-87: Immobilizer Communication Malfunction
- DTC B1576-44: Hybrid/EV Powertrain Control Module Data Memory Failure (Immobilizer)
- DTC U0100-87: Lost Communication With ECM/Pcm "A" Missing Message
- DTC U0110-87: Lost Communication With Drive Motor Control Module Missing Message
- DTC U0111-87: Lost Communication With Hybrid/EV Battery Energy Control Module "A" Missing Message
- DTC U0129-87: Lost Communication With Brake System Control Module Missing Message
- DTC U0140-87: Lost Communication With Body Control Module
- DTC U0151-87: Lost Communication With Restraints Control Module Missing Message
- DTC U0155-87: Lost Communication With Instrument Panel Cluster (IPC) Control Module Missing Message
- DTC U0164-87: Lost Communication With HVAC Control Module Missing Message
- DTC U019B-87: Lost Communication With Hybrid/EV Battery Charger Control Module Missing Message
- DTC U0424-81: HVAC Control Module To Hybrid Powertrain Control Module Invalid Serial Data Received
- DTC U1107-87: Lost Communication With Power Management Module Missing Message
- DTC U1170-87: Lost Communication With Brake System Control Module (Secondary Can Line) Missing Message
- DTC U1175-87: Lost Communication With Hybrid/EV Battery Energy Control Module "A" (Powertrain Bus) Missing Message
- DTC U1259-87: Lost Communication With AWD Control Module Missing Message
- DTC U128E-87: LOST COMMUNICATION WITH EyeSight (C-CAN) MISSING MESSAGE
- Diagnostics With Phenomenon
- List
- Inspection
- Brake Override
- General Description
- Hybrid Mode Switch System
- Drive Start Control System
- Hybrid Vehicle Control Ecu Assembly Power Supply System
- Motor Resolver Circuit
- Motor High-Voltage Circuit
- Generator Resolver Circuit
- Generator High-Voltage Circuit
- Shut Down Signal Circuit
- Inverter Low-Voltage Circuit
- HV Battery High-Voltage Line Circuit
- Cooling System
- General Scan Tool
- Operation
- How To Use General Scan Tool
- Mode $01 (Current Powertrain Diagnostic Data)
- Mode $02 (Freeze Frame Data)
- Mode $03 (Emission-Related DTC)
- Mode $04 (Clear/Reset Emission-Related Diagnostic Information)
- Mode $07 (Initial Emission-Related Powertrain DTC)
- Mode $09 (Request Vehicle Information)
- Mode $0A (Emission-Related DTC (With Permanent Status))
- Operation
RENDER: 1.0x
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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.