Network Communication Codes (U0XXX)
Complete list of network communication diagnostic trouble codes (U0XXX). Browse codes for CAN bus and module communication issues.
Popular Network Communication Codes
U0121
Lost Communication with ABS
Lost Communication with Anti-Lock Brake System Control Module
U0202
Lost Communication with Instrument Panel
Lost Communication with Instrument Panel Control Module
U0300
Lost Communication with Infotainment
Lost Communication with Infotainment Control Module
Complete Network Codes Index
Browse all available network communication diagnostic trouble codes (U0XXX) organized by series:
Showing codes 6001-6100 of 8192 total codes
U1XXX Network Communication Systems
U1770
U1770 indicates a communication fault between vehicle control modules.
U1771
DTC U1771 indicates a communication error between the TCM and ECM.
U1772
U1772 indicates a communication error between the TCM and ECM in your vehicle.
U1773
U1773 means there's a communication issue between the ECM and TCM.
U1774
The U1774 diagnostic trouble code indicates a communication error between the...
U1775
U1775 indicates a communication error between vehicle control modules.
U1776
DTC U1776 indicates a communication problem in the vehicle's control modules,...
U1777
U1777 indicates a communication failure within the hybrid vehicle control sys...
U1778
U1778 indicates a communication error between the PCM and other control modules.
U1779
U1779 signifies a communication error within the hybrid control module.
U177A
U177A indicates a communication error within vehicle systems, affecting modul...
U177B
U177B indicates a communication failure between the TCM and ECM.
U177C
U177C indicates a communication failure between the Transmission Control Modu...
U177D
U177D indicates a communication error between the Transmission Control Module...
U177E
U177E indicates a communication error between the transmission and engine con...
U177F
DTC U177F indicates a communication error between control modules in your veh...
U1780
U1780 signifies a communication failure between the transmission control modu...
U1781
The U1781 code signifies a communication issue between your engine and transm...
U1782
U1782 indicates a communication problem between the TCM and ECM.
U1783
U1783 indicates a communication issue between the transmission control module...
U1784
U1784 indicates a communication error between the TCM and ECM,
U1785
U1785 indicates a communication error between the ECM and TCM.
U1786
DTC U1786 indicates a communication failure between the transmission control ...
U1787
U1787 indicates a communication error between control modules,
U1788
U1788 refers to a communication failure between the transmission control modu...
U1789
U1789 indicates a communication issue with the Transmission Control Module.
U178A
The U178A code indicates a communication issue within the vehicle's CAN bus s...
U178B
The U178B code indicates a communication failure between the Transmission Con...
U178C
U178C indicates a communication error between the Transmission Control Module...
U178D
The U178D code indicates a communication failure between the engine and trans...
U178E
U178E indicates a communication issue between the TCM and ECM.
U178F
The U178F code indicates a communication failure between the Transmission Con...
U1790
U1790 indicates a communication error in the vehicle's data network.
U1791
DTC U1791 denotes a communication error between the transmission control modu...
U1792
DTC U1792 indicates a communication failure between the Transmission Control ...
U1793
U1793 indicates a communication failure within the vehicle's control modules.
U1794
U1794 indicates a communication error in the multi-function display system.
U1795
U1795 signifies a communication error between control modules in your vehicle.
U1796
U1796 signifies a communication error between the vehicle's control modules.
U1797
U1797 indicates a communication error in the CAN bus system, affecting multip...
U1798
DTC U1798 indicates a communication failure within the vehicle's network,
U1799
U1799 indicates a communication error between vehicle control modules,
U179A
U179A indicates a communication error within the vehicle's control modules,
U179B
U179B indicates a communication problem within your vehicle's network,
U179C
The U179C code indicates a communication fault in the vehicle's body control ...
U179D
U179D indicates a communication failure between vehicle control modules.
U179E
U179E indicates a communication error between vehicle control modules,
U179F
U179F indicates a communication failure between the engine and transmission c...
U17A0
U17A0 indicates a communication error between vehicle control modules.
U17A1
U17A1 indicates a communication error between various control modules in your...
U17A2
U17A2 denotes a communication issue within the vehicle's control modules.
U17A3
U17A3 indicates a network communication error between control modules.
U17A4
U17A4 indicates a communication issue between vehicle control modules.
U17A5
U17A5 indicates a communication fault between vehicle modules.
U17A6
U17A6 indicates a communication error between vehicle modules.
U17A7
U17A7 indicates a communication issue within your vehicle's electronic contro...
U17A8
U17A8 indicates a communication issue between your vehicle's body control mod...
U17A9
U17A9 indicates a communication error between vehicle control modules.
U17AA
U17AA signifies a communication error between vehicle modules.
U17AB
DTC U17AB indicates a communication fault between vehicle control modules.
U17AC
U17AC indicates a communication failure between the body control module and o...
U17AD
U17AD indicates a communication fault between the Instrument Cluster and Body...
U17AE
U17AE indicates a communication failure between vehicle control modules.
U17AF
U17AF indicates a communication error between vehicle control modules.
U17B0
U17B0 indicates a communication failure between the vehicle's control modules.
U17B1
U17B1 indicates a communication fault among vehicle modules, impacting electr...
U17B2
U17B2 indicates a communication failure in the vehicle's network,
U17B3
U17B3 indicates a communication error between vehicle modules.
U17B4
U17B4 indicates a communication error between vehicle control modules.
U17B5
U17B5 indicates a communication failure between control modules in your vehicle.
U17B6
U17B6 signifies a communication issue between vehicle control modules.
U17B7
U17B7 indicates a communication error between vehicle control modules.
U17B8
U17B8 indicates a communication failure between vehicle control modules.
U17B9
U17B9 indicates a communication error in the vehicle's body control module.
U17BA
U17BA indicates a communication error between vehicle modules,
U17BB
U17BB indicates a communication fault in the vehicle's network,
U17BC
U17BC indicates a communication error between vehicle control modules.
U17BD
U17BD indicates a communication failure between vehicle control modules.
U17BE
Indicates one or more of the components in the vehicle’s electronic system ca...
U17BF
U17BF indicates a communication issue between vehicle modules,
U17C0
U17C0 indicates a communication error within the vehicle's electronic systems.
U17C1
U17C1 indicates a communication failure between vehicle modules.
U17C2
The U17C2 code signifies a communication error between control modules in you...
U17C3
U17C3 indicates a communication issue in the vehicle's network.
U17C4
The U17C4 code signals a communication failure between vehicle modules.
U17C5
U17C5 indicates a communication error between control modules.
U17C6
U17C6 indicates a communication issue between vehicle control modules.
U17C7
U17C7 indicates a communication failure in the Body Control Module (BCM) affe...
U17C8
U17C8 indicates a communication failure between control modules in your vehicle.
U17C9
U17C9 indicates a communication error between control modules in your vehicle...
U17CA
U17CA indicates a communication problem in the vehicle's network,
U17CB
U17CB indicates a communication failure between the body control module and o...
U17CC
DTC U17CC indicates a communication error between vehicle control modules.
U17CD
U17CD indicates a communication issue with the body control module in your ve...
U17CE
U17CE indicates a communication error between vehicle modules.
U17CF
U17CF indicates a communication failure between control modules in the vehicl...
U17D0
U17D0 indicates a communication failure in the vehicle's electronic control m...
U17D1
U17D1 indicates a communication failure between vehicle control modules.
U17D2
U17D2 indicates a communication failure between control modules,
U17D3
U17D3 indicates a communication issue between vehicle modules.
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