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 7201-7300 of 8192 total codes
U1XXX Network Communication Systems
U1C20
Code U1C20 indicates a communication issue within the vehicle's steering angl...
U1C21
U1C21 indicates an issue with the auxiliary battery voltage monitoring system.
U1C22
DTC U1C22 indicates a communication failure between vehicle control modules.
U1C23
U1C23 indicates a communication error in the vehicle's network,
U1C24
DTC U1C24 indicates a communication failure within the vehicle's control modu...
U1C25
U1C25 refers to a communication error between the battery management system a...
U1C26
DTC U1C26 indicates a communication fault between vehicle modules,
U1C27
U1C27 indicates a communication issue within the vehicle's control modules,
U1C28
U1C28 indicates a communication error between vehicle control modules.
U1C29
U1C29 indicates a communication error in the battery management system.
U1C2A
U1C2A indicates a communication failure between vehicle control modules,
U1C2B
U1C2B indicates a communication failure between vehicle modules.
U1C2C
U1C2C indicates a communication error within the vehicle's advanced driver as...
U1C2D
U1C2D indicates a communication malfunction in the vehicle's electronic contr...
U1C2E
U1C2E indicates a communication issue within the vehicle's Advanced Driver As...
U1C2F
U1C2F indicates a communication issue within the vehicle's electronic systems.
U1C30
U1C30 indicates a communication failure between the Body Control Module and o...
U1C31
DTC U1C31 indicates a communication error between vehicle modules.
U1C32
U1C32 indicates a communication issue within the vehicle's network,
U1C33
The U1C33 code indicates a communication error within the body control module.
U1C34
U1C34 signifies a communication error between the Body Control Module and oth...
U1C35
U1C35 indicates a communication issue within the vehicle's Body Control Module.
U1C36
DTC U1C36 indicates a communication issue between control modules in your veh...
U1C37
Indicates a communication issue between the Body Control Module (BCM) and oth...
U1C38
DTC U1C38 indicates a communication failure between vehicle control modules.
U1C39
U1C39 indicates a communication error between vehicle control modules.
U1C3A
The U1C3A diagnostic trouble code (DTC) is a communication error indicating a...
U1C3B
The U1C3B code signifies a problem with the communication module related to A...
U1C3C
U1C3C indicates a communication failure between the body control module and o...
U1C3D
U1C3D indicates a malfunction in vehicle communication networks related to ADAS.
U1C3E
U1C3E indicates a malfunction in the vehicle speed sensor communication.
U1C3F
U1C3F indicates a communication error between vehicle modules,
U1C40
U1C40 indicates a communication error within the vehicle's network.
U1C41
U1C41 indicates a communication error within vehicle control systems,
U1C42
DTC U1C42 indicates a communication issue in your vehicle's electronic system.
U1C43
The U1C43 code indicates a communication issue within the vehicle's network,
U1C44
U1C44 indicates a communication error between control modules,
U1C45
U1C45 indicates a communication issue between various vehicle modules.
U1C46
DTC U1C46 indicates a communication issue in the vehicle's control modules,
U1C47
U1C47 indicates a communication error within the vehicle’s electronic modules.
U1C48
U1C48 signifies a communication failure between control modules in your vehicle.
U1C49
U1C49 indicates a communication failure in the vehicle's Advanced Driver Assi...
U1C4A
U1C4A indicates a communication error within the vehicle's control modules.
U1C4B
U1C4B indicates a communication problem within the vehicle's advanced driver ...
U1C4C
DTC U1C4C indicates a loss of communication with the steering angle sensor mo...
U1C4D
U1C4D indicates a communication error between the body control module and oth...
U1C4E
Indicates network communication issue that typically arises in vehicles equip...
U1C4F
U1C4F signifies a communication error between vehicle control modules,
U1C50
U1C50 indicates a communication error between control modules in your vehicle.
U1C51
DTC U1C51 is a diagnostic trouble code that typically indicates a problem wit...
U1C52
U1C52 indicates a communication fault in the chassis control module,
U1C53
U1C53 indicates a communication error between the body control module and the...
U1C54
U1C54 indicates a communication error within the vehicle's network.
U1C55
The diagnostic trouble code U1C55 indicates a communication error within the ...
U1C56
U1C56 indicates a communication failure between vehicle control modules.
U1C57
U1C57 indicates a communication issue within the vehicle's control modules.
U1C58
U1C58 indicates a communication error in the vehicle's control modules.
U1C59
U1C59 indicates a communication failure between the vehicle control module an...
U1C5A
U1C5A indicates a communication fault in vehicle modules, particularly those ...
U1C5B
The U1C5B diagnostic trouble code (DTC) is a communication-related fault that...
U1C5C
U1C5C indicates a communication error within the vehicle's electronic systems.
U1C5D
U1C5D indicates a communication issue with the steering angle sensor in your ...
U1C5E
The U1C5E code indicates a communication issue within the vehicle's ADAS netw...
U1C5F
The U1C5F code indicates a communication issue between the body control modul...
U1C60
U1C60 indicates a problem with the high-voltage battery system in hybrid and ...
U1C61
U1C61 indicates a communication fault with the steering angle sensor.
U1C62
The U1C62 code indicates a communication error between vehicle control modules.
U1C63
U1C63 indicates a communication issue within the vehicle's ADAS network.
U1C64
U1C64 signifies a communication failure with the ignition control module.
U1C65
U1C65 is a communication error related to the body control module,
U1C66
U1C66 indicates a communication issue with the Battery Energy Control Module.
U1C67
U1C67 indicates a communication error within the vehicle's network,
U1C68
Indicates there is a problem with the communication between the vehicle's con...
U1C69
U1C69 indicates a communication fault between control modules in your vehicle.
U1C6A
DTC U1C6A indicates a communication issue within the vehicle's electronic con...
U1C6B
U1C6B signifies a communication error between vehicle modules,
U1C6C
U1C6C indicates a communication issue in the vehicle's network,
U1C6D
The U1C6D diagnostic trouble code (DTC) typically signifies a fault in the ve...
U1C6E
U1C6E indicates a communication issue among vehicle control modules,
U1C6F
DTC U1C6F indicates a communication failure in the vehicle's network,
U1C70
U1C70 indicates a communication fault in your vehicle's control modules.
U1C71
DTC U1C71 signifies a communication issue in the vehicle's data bus system.
U1C72
U1C72 indicates a communication failure between vehicle control modules,
U1C73
U1C73 indicates a communication fault in the vehicle's advanced driver assist...
U1C74
DTC U1C74 indicates a communication error within the vehicle's electronic con...
U1C75
U1C75 indicates a communication issue within the vehicle's control modules,
U1C76
U1C76 signifies a communication error between vehicle control modules.
U1C77
U1C77 signifies a communication failure in the vehicle's network,
U1C78
U1C78 indicates a communication failure within the vehicle's electrical system.
U1C79
U1C79 indicates a communication issue between the vehicle's modules.
U1C7A
DTC U1C7A indicates a communication error related to the Body Control Module.
U1C7B
U1C7B indicates a communication error within the vehicle's control modules.
U1C7C
U1C7C indicates a communication error within the vehicle's electronic systems.
U1C7D
U1C7D indicates a communication error between vehicle control modules related...
U1C7E
U1C7E indicates a communication issue within the vehicle’s control modules.
U1C7F
U1C7F indicates a communication fault in the vehicle's ADAS or control modules.
U1C80
U1C80 indicates a communication issue between the body control module and oth...
U1C81
U1C81 signifies a communication failure between vehicle control units.
U1C82
U1C82 indicates a communication error in advanced driver-assistance systems.
U1C83
U1C83 is a communication error code related to the vehicle's electronic contr...
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