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.
1991 Subaru Justy BaseFACTORY OEM SERVICE PROCEDURE
Engine Controls - Tests W/Codes - CARBURETED
- Introduction
- Hard Failures
- Intermittent Failures
- Retrieving Codes
- Trouble Code Identification
- Clearing Codes
- ECM Location
- Summary
- Wire Color Abbreviations Menu
- Diagnostic Code Charts
- Basic Operation Of Self-Diagnostic System (JUSTY Carb.)
- Basic Trouble Shooting Procedures
- Read Memory Mode
- D-Check Mode
- Code 14: Duty Solenoid Valve
- Code 15: Coasting Fuel Cut (CFC) System
- Code 16: Feedback System
- Code 17: Fuel Pump & Automatic Choke
- Code 21: Coolant Temp Sensor (Cts) Circuit
- Code 22: VLC Solenoid Valve
- Code 23: Pressure Sensor
- Code 24: Idle Up Solenoid
- Code 25: FCV Solenoid Valve
- Code 32: Oxygen Sensor
- Code 33: Speed Sensor
- Code 34: EGR Solenoid
- Code 35: CPC Solenoid Valve
- Code 41: Feedback Carb System (CALIF. Only)
- Code 46: Radiator Fan Control
- Code 52: Clutch Switch
- Code 53: HAC Solenoid Valve
- Code 55: EGR Sensor
- Code 62: Idle Up (Lighting & Rear Defogger Switch)
- Code 63: Idle Up (Fan Motor Switch)
Factory Service Tools
Use the Manual With the Right Hardware
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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.