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2012
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Optima Hybrid
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Repair and Diagnosis
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Engine Performance
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Engine Control System Diagnosis (2 Of 2) - HEV
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DTC U1004: Lost Communication with Hybrid Powertrain Control Module-H-CAN
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General Information
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DTC Description
DTC Description
The PCM sets DTC U1004 if No message during 100m sec has not been received through the CAN signal.