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Buick
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2003
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Century Base
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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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Diagnostic Tests
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DTC P1381: Misfire Detected No EBTCM/Pcm Serial Data (Century & MALIBU)
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Conditions For Running Test
Conditions For Running Test
The vehicle speed is more than 10 MPH.
The engine load is less than 87 percent.
The engine misfire is detected and DTC P0300 set.
The engine speed is less than 5000 RPM.