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Volt
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Repair and Diagnosis
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Engine Performance
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System
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Data Communication System - DTC B1000 To DTC U183E
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Diagnostic Information and Procedures
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DTC U1818: Lost Communication with Engine Control Module
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Conditions for Running the DTC
Conditions for Running the DTC
The system voltage is at least 10 V.
The vehicle power mode master requires serial data communication to occur from this specific device.