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Section 54 (Data Link Communications System)
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DTC U2105 Lost Comm with Engine Control System
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Notes
DTC U2105 Lost Comm with Engine Control System: Notes
WARNING:
This page is about a different car, the 1999 Cadillac Catera. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: CAN Bus Communication Schematic