LEMON Manuals
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Saab
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2002
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9-5 Linear, 4D Sedan, Automatic
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - Self-Diagnostics
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Fault Code Diagnosis
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P1135: O2S Heater Circuit - Current Too Low - Sensor 1
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Test 1: Engine running. Main relay voltage exceeding 10 volts. Pre-heating not active.
Test 2: Engine running. Main relay voltage exceeding 10 volts. Pre-heating active.