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HOMESERVICE MANUALSSUBARU2022IMPREZA BASE, 4D SEDAN, AUTOMATIC CVT TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)BRAKESTRACTION CONTROLELECTRIC BRAKE BOOSTER SYSTEM (DIAGNOSTICS)DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)DTC C1B0E SOLENOID VALVE MAIN RELAY CIRCUIT LOWGENERAL DESCRIPTIONEXECUTION CONDITION
2022 Subaru Impreza Base, 4D Sedan, Automatic CVT Trans

Execution Condition

2022 Subaru Impreza Base, 4D Sedan, Automatic CVT TransSECTION Execution Condition
Secondary parameters Execution condition
Case 1 
ECM state		 Normal
Command to Brake Fluid Pressure Control Solenoid Valve Power Supply Relay Close
READY OFF
Main power supply More than 6.92 V
Case 2 
ECM state		 Normal
Command to Brake Fluid Pressure Control Solenoid Valve Power Supply Relay Close
READY ON
Main power supply More than 6.92 V
IG1 Voltage More than 9.54 V
Case 3 
ECM state		 Initial Check
Command to Brake Fluid Pressure Control Solenoid Valve Power Supply Relay Close
Main power supply More than 6.92 V
RENDER: 1.0x

NO RELATED

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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.