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 1601-1700 of 4097 total codes
U0XXX Network Communication Systems
U0640
DTC U0640 indicates a communication failure between vehicle modules.
U0641
U0641 indicates a communication error between vehicle modules.
U0642
U0642 indicates a communication malfunction between vehicle modules.
U0643
U0643 indicates a communication error between vehicle control modules.
U0644
DTC U0644 indicates a communication issue between the control modules in your...
U0645
U0645 indicates a communication fault in the vehicle's control modules.
U0646
DTC U0646 indicates a communication error between vehicle control modules.
U0647
U0647 indicates a communication error between vehicle control modules.
U0648
U0648 indicates a communication malfunction between vehicle control modules.
U0649
U0649 indicates a communication error between control modules in your vehicle.
U064A
The U064A code indicates a communication issue between vehicle control modules.
U064B
U064B indicates a communication error between vehicle control modules.
U064C
U064C indicates a communication error between vehicle control modules.
U064D
The U064D code indicates a communication failure between control modules in y...
U064E
DTC U064E is a communication error code indicating a failure in vehicle modul...
U064F
DTC U064F indicates a communication issue between the Body Control Module and...
U0650
U0650 indicates a communication problem between control modules in your vehicle.
U0651
DTC U0651 indicates a communication issue between vehicle control modules.
U0652
U0652 indicates a communication failure between the instrument cluster and ot...
U0653
U0653 indicates a communication error between control modules in your vehicle.
U0654
U0654 indicates a communication error between vehicle control modules.
U0655
Code U0655 indicates a communication issue between your vehicle's control mod...
U0656
U0656 indicates a communication problem between vehicle control modules.
U0657
U0657 indicates a communication issue between control modules in your vehicle.
U0658
U0658 indicates a communication error between vehicle control modules,
U0659
U0659 indicates a communication error between vehicle control modules.
U065A
U065A indicates a communication issue between electronic control units in you...
U065B
U065B indicates a communication fault in vehicle modules.
U065C
U065C indicates a communication error between the PCM and other modules in th...
U065D
U065D indicates a communication error between vehicle control modules.
U065E
DTC U065E indicates a communication error between vehicle control modules.
U065F
U065F indicates a communication error between vehicle control modules.
U0660
DTC U0660 indicates a communication failure between the body control module a...
U0661
U0661 indicates a communication error between vehicle control modules.
U0662
U0662 indicates a communication error between control modules in your vehicle.
U0663
U0663 indicates a communication fault between vehicle control modules.
U0664
U0664 indicates a communication error between control modules.
U0665
U0665 indicates a communication failure between the body control module and o...
U0666
U0666 indicates a communication error between vehicle modules.
U0667
U0667 indicates a communication error between vehicle modules.
U0668
DTC U0668 indicates a communication error between vehicle control modules.
U0669
U0669 signals a communication issue between vehicle control modules.
U066A
U066A indicates a communication error between vehicle control modules.
U066B
U066B indicates a communication error between vehicle modules.
U066C
U066C indicates a communication issue between the PCM and TCM in your vehicle.
U066D
U066D signifies a communication failure between the Transmission Control Modu...
U066E
DTC U066E signifies a communication error between vehicle control modules.
U066F
U066F signifies a communication problem between vehicle control modules.
U0670
U0670 indicates a communication error between vehicle control modules.
U0671
U0671 indicates a communication issue between vehicle control modules.
U0672
U0672 indicates a communication failure with the steering control module.
U0673
U0673 indicates a communication error between the ECM and TCM.
U0674
U0674 indicates a communication error with a control module in your vehicle.
U0675
U0675 indicates a communication fault between the transmission control module...
U0676
DTC U0676 indicates a communication error between the Engine Control Module a...
U0677
DTC U0677 signifies a communication failure between vehicle control modules,
U0678
U0678 signifies a communication error with the Transmission Control Module (T...
U0679
U0679 signifies a communication fault with the Body Control Module.
U067A
U067A indicates a communication failure between vehicle control modules.
U067B
U067B indicates a communication issue with the vehicle's Transmission Control...
U067C
U067C indicates a communication error between vehicle control modules.
U067D
U067D indicates a communication error between vehicle control modules.
U067E
DTC U067E indicates a communication failure between control modules in your v...
U067F
DTC U067F indicates a communication failure between the Engine Control Module...
U0680
U0680 indicates a communication failure within the vehicle's network.
U0681
U0681 indicates a communication error between vehicle control modules.
U0682
DTC U0682 indicates a communication issue in the vehicle's network,
U0683
U0683 signifies a communication error between vehicle control modules.
U0684
Indicates a communication error within the Controller Area Network (CAN) bus ...
U0685
U0685 indicates a communication error between vehicle control modules,
U0686
U0686 indicates a communication issue within the vehicle's control modules.
U0687
U0687 indicates a communication error between vehicle control modules.
U0688
U0688 indicates a communication error between vehicle control modules.
U0689
U0689 indicates a communication issue among vehicle control modules.
U068A
U068A indicates a communication failure between vehicle control modules.
U068B
DTC U068B indicates a communication failure between the body control module a...
U068C
U068C signifies a communication error between vehicle control modules.
U068D
U068D indicates a communication error between vehicle control modules.
U068E
U068E indicates a communication error between vehicle control modules,
U068F
DTC U068F indicates a communication issue within the vehicle's control modules.
U0690
U0690 indicates a communication error between control modules in your vehicle.
U0691
U0691 indicates a communication failure between vehicle modules.
U0692
U0692 indicates a communication error between vehicle control modules.
U0693
U0693 indicates a communication error between vehicle control modules.
U0694
DTC U0694 signifies a communication error between control modules in your veh...
U0695
U0695 is a communication error code that indicates a problem with the vehicle...
U0696
DTC U0696 signals a communication error between vehicle control modules.
U0697
U0697 indicates a communication issue between vehicle control modules.
U0698
U0698 indicates a communication error between vehicle control modules.
U0699
U0699 indicates a communication failure between control modules in your vehicle.
U069A
U069A indicates a communication fault between vehicle control modules.
U069B
U069B indicates a communication error between vehicle control modules.
U069C
U069C indicates a communication error between vehicle modules,
U069D
U069D indicates a communication error between vehicle control modules.
U069E
U069E indicates a communication fault between vehicle control modules.
U069F
DTC U069F indicates a communication error between modules in your vehicle's s...
U06A0
U06A0 indicates a communication error between vehicle control modules.
U06A1
U06A1 indicates a communication failure between vehicle control modules.
U06A2
U06A2 indicates a communication error between control modules in the vehicle.
U06A3
U06A3 indicates a communication issue between vehicle control modules.
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