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 MANUALSSAAB1991900 BASE, 2D CONVERTIBLE, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - TESTS W/CODESCLEARING CODES
1991 Saab 900 Base, 2D Convertible, Standard
Clearing Codes
1991 Saab 900 Base, 2D Convertible, StandardSECTION Clearing Codes
- To erase codes, turn jumper switch to ON position. After about 2.5 seconds, CHECK ENGINE light will flash 3 times quickly. Immediately after third flash, turn jumper switch to OFF position.
- Some faults can be classified as adaptation faults. Once fault is corrected, codes generated may not be erased until system re-adapts to new running conditions. See PROGRAMMING ECU .
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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.