Results for “U”

Fault codes 7,936

Results match keywords in the stored descriptions. Codes you typed are shown first.

Code	Description	Brands	System
U1021	Loss of serial communications for class 2 devices	20	Network
U1022	Loss of serial communications for class 2 devices	17	Network
U1023	De-Inhibit Completed Previously - Vehicle is not in Inhibited state. Clear codes and verify if DTC is no longer present in BCM	18	Network
U1024	Loss of serial communications for class 2 devices	18	Network
U1025	Loss of serial communications for class 2 devices	17	Network
U1026	Vehicles with code JQYA	18	Network
U1027	Vehicles with code JFZA	17	Network
U1028	Loss of Serial Communications for Class 2 Devices	14	Network
U1029	Loss of Serial Communications for Class 2 Devices	13	Network
U102A	Internal Master/Slave CAN bus 2: defective; Lower limit exceeded	10	Network

Show 15 more matches on this page

Code	Description	Brands	System
U102B	Internal Master/Slave CAN bus 2: no communications; Short to plus	2	Network
U1030	Are you programming the module to resolve DTC ?	14	Network
U1031	Loss of Serial Communications for Class 2 Devices	17	Network
U1032	Loss of Serial Communications for Class 2 Devices	15	Network
U1033	Loss of Serial Communications for Class 2 Devices	13	Network
U1034	Adaptive damping system	14	Network
U1035	NOx sensor 1 bank 2: implausible signal; Open or short to ground	13	Network
U1036	NOx sensor 1 bank 2: no communication; Open or short to plus	13	Network
U1037	Not on model 963.004/005/405/406	9	Network
U1038	Loss of Serial Communications for Class 2 Devices	10	Network
U1039	Vehicle speed signal missing or incorrect	12	Network
U103A	HEC 0x320 message timeout	2	Network
U103B	A/C compressor: no communication; Short to plus	10	Network
U103C	A/C compressor: implausible signal; No or incorrect basic setting / adaptation	3	Network
U103D	Left Headlamp Shutter LIN Communication Failure	2	Network

Code	Description	Brands	System
U102B	Internal Master/Slave CAN bus 2: no communications; Short to plus	2	Network
U1030	Are you programming the module to resolve DTC ?	14	Network
U1031	Loss of Serial Communications for Class 2 Devices	17	Network
U1032	Loss of Serial Communications for Class 2 Devices	15	Network
U1033	Loss of Serial Communications for Class 2 Devices	13	Network
U1034	Adaptive damping system	14	Network
U1035	NOx sensor 1 bank 2: implausible signal; Open or short to ground	13	Network
U1036	NOx sensor 1 bank 2: no communication; Open or short to plus	13	Network
U1037	Not on model 963.004/005/405/406	9	Network
U1038	Loss of Serial Communications for Class 2 Devices	10	Network
U1039	Vehicle speed signal missing or incorrect	12	Network
U103A	HEC 0x320 message timeout	2	Network
U103B	A/C compressor: no communication; Short to plus	10	Network
U103C	A/C compressor: implausible signal; No or incorrect basic setting / adaptation	3	Network
U103D	Left Headlamp Shutter LIN Communication Failure	2	Network

Advanced: scanner vehicle and live-data matches

No matching vehicles.

No matching live-data parameters.

These tables come from diagnostic data. They are useful for advanced users and can be ignored for a normal code lookup.