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2014
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Optima Hybrid EX
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Repair and Diagnosis
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Engine Performance
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Engine Control System Diagnosis (3 Of 3) (HEV)
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DTC U1004: Lost Communication with Hybrid Powertrain Control Module-H-CAN
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DTC 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.