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 MANUALSSUBARU1989GL-10 4D SEDAN, 1.8 4REPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMTESTS W/CODES - MPFICODE CHARTSCODE 41
1989 Subaru GL-10 4D Sedan, 1.8 4
Code 41
1989 Subaru GL-10 4D Sedan, 1.8 4SECTION Code 41
Trouble code (41) indicates that the mixture us too lean. When another trouble code is not outputter, all system component are electrically in good order. Check the following:
- Injector nozzles (for clogging)
- Fuel pressure
- Performance characteristics of water temperature sensor.NOTE: If the above three are OK, check the following:
- Drive some distance after replacing the air flow meter. If still good proceed to next step.
- Replace fuel injectors and drive some distance. If still good proceed to next step.
- Replace control unit.
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.