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Buick
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2002
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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 Control System Self-Diagnostics - 3.1L Engine
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Diagnostic Tests
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DTC P1381: Misfire Detected No EBTCM/Pcm Serial Data
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Conditions For Running DTC
Conditions For Running DTC
The engine load is less than 87 percent.
The engine speed is less than 5000 RPM.
The vehicle speed is greater than 10 MPH.
A misfire DTC is occurring and is requesting the MIL to be illuminated.