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DTC Charts

WARNING: This page is about a different car, the 2013 Lincoln MKX and 2013 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Network DTCs (U-codes) are often a result of intermittent concerns such as damaged wiring or low battery voltage occurrences. Additionally, vehicle repair procedures such as module reprogramming often set network DTCs. Replacing a module to resolve a network DTC is unlikely to resolve the concern. To prevent repeat network DTC concerns, inspect all network wiring, especially connectors. Test the vehicle battery, refer to BATTERY, MOUNTING AND CABLES .
NOTE: Some modules on this vehicle utilize a 5-character DTC followed by a 2-character failure type code. The failure type code provides information about specific fault conditions such as opens or shorts to ground. Continuous Memory DTCs have an additional 2-character DTC status code suffix to assist in determining DTC history.
COMMUNICATION NETWORK DTC CHART

DTC Description Source Action
U0001: 88 High Speed Controller Area Network (HS-CAN) Communication Bus; Bus Off
  • ABS module
  • C-CM
The module could not communicate on the network at a point in time. The fault is not currently present (the module had to communicate with the scan tool to report this DTC). CLEAR the DTC. REPEAT the Network Test with the scan tool. VERIFY the integrity of the connectors and wiring, Refer to MODULE COMMUNICATIONS NETWORK in SYSTEM WIRING DIAGRAMS (Edge) article or SYSTEM WIRING DIAGRAMS (MKX) article .
U0028: 08 Vehicle Communication Bus A: Bus Signal/Message Failures
  • RCM
The module could not communicate on the network at a point in time. The fault is not currently present (the module had to communicate with the scan tool to report this DTC). CLEAR the DTC. REPEAT the Network Test with the scan tool. VERIFY the integrity of the connectors and wiring Refer to MODULE COMMUNICATIONS NETWORK in SYSTEM WIRING DIAGRAMS (Edge) article or SYSTEM WIRING DIAGRAMS (MKX) article .
U0028: 88 Vehicle Communication Bus A: Bus Off
  • RCM
The module could not communicate on the network at a point in time. The fault is not currently present (the module had to communicate with the scan tool to report this DTC). CLEAR the DTC. REPEAT the Network Test with the scan tool. VERIFY the integrity of the connectors and wiring Refer to MODULE COMMUNICATIONS NETWORK in SYSTEM WIRING DIAGRAMS (Edge) article or SYSTEM WIRING DIAGRAMS (MKX) article .
U0073 Control Module Communication Bus A Off
  • HCM
The module could not communicate on the network at a point in time. The fault is not currently present (the module had to communicate with the scan tool to report this DTC). CLEAR the DTC. REPEAT the Network Test with the scan tool. VERIFY the integrity of the connectors and wiring. Refer to MODULE COMMUNICATIONS NETWORK in SYSTEM WIRING DIAGRAMS (Edge) article or SYSTEM WIRING DIAGRAMS (MKX) article .
U0073: 00 Control Module Communication Bus A Off
  • TCM
The module could not communicate on the network at a point in time. The fault is not currently present (the module had to communicate with the scan tool to report this DTC). CLEAR the DTC. REPEAT the Network Test with the scan tool. VERIFY the integrity of the connectors and wiring. Refer to MODULE COMMUNICATIONS NETWORK in SYSTEM WIRING DIAGRAMS (Edge) article or SYSTEM WIRING DIAGRAMS (MKX) article .
U3000: 88 Control Module: Bus Off
  • APIM
The module could not communicate on the network at a point in time. The fault is not currently present (the module had to communicate with the scan tool to report this DTC). CLEAR the DTC. REPEAT the Network Test with the scan tool. VERIFY the integrity of the connectors and wiring Refer to MODULE COMMUNICATIONS NETWORK in SYSTEM WIRING DIAGRAMS (Edge) article or SYSTEM WIRING DIAGRAMS (MKX) article .