LEMON Manuals
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Buick
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2003
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Century Custom
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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 - 3.1L Engine
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Drive Cycles
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Inspection/Maintenance Heated Oxygen Sensor/Oxygen Sensor System Set Procedure
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Conditions For Running Test
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Conditions For Running Test
The ECT sensor parameter is more than 176°F (80°C).
Engine is in closed loop fuel control.
Engine has been running more than 4 minutes.
Battery voltage is 10-18 volts.