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 MANUALSSAAB1990900 BASE, 4D SEDAN, 2.0 D, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - TESTS W/CODESFAULT CODES (WITHOUT USING ISAT SCAN TESTER)ERROR CODE 12214
1990 Saab 900 Base, 4D Sedan, 2.0 D, Standard
Error Code 12214
1990 Saab 900 Base, 4D Sedan, 2.0 D, StandardSECTION Error Code 12214
- The check engine light is on. The coolant temperature signal is below 90°C or above 160°C, which is incorrect or out of range.
- Test coolant temperature sensor. Make resistance test at pin 13 of LH control unit and ground. Resistance should be approximately 2280-2720 ohms at 68°F (20°C) and 295-365 ohms at 176°F (80°C).
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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.