U CODE FAMILY
Network code references — Page 13.
Communication and network diagnostic references. A communication code does not identify a failed module by itself.
Generic OBD-II
U355B
Charge Air Cooler Outlet Pressure Sensor 2 Circuit
NetworkRead the code
Generic OBD-II
U355C
Charge Air Cooler Outlet Temperature Sensor Circuit
NetworkRead the code
Generic OBD-II
U355D
Expander Inlet Pressure Sensor 1 Circuit
NetworkRead the code
Generic OBD-II
U355E
Expander Inlet Pressure Sensor 2 Circuit
NetworkRead the code
Generic OBD-II
U355F
Cathode Backpressure Valve Control Circuit
NetworkRead the code
Generic OBD-II
U3560
Cathode Backpressure Valve Position Sensor Circuit
NetworkRead the code
Generic OBD-II
U3561
Cathode Bypass Valve Control Circuit
NetworkRead the code
Generic OBD-II
U3562
Cathode Bypass Valve
NetworkRead the code
Generic OBD-II
U3563
Cathode Bypass Valve Position Sensor Circuit
NetworkRead the code
Generic OBD-II
U3564
Hydrogen Supply Line A Pressure Sensor 1 Circuit
NetworkRead the code
Generic OBD-II
U3565
Hydrogen Supply Line A Pressure Sensor 2 Circuit
NetworkRead the code
Generic OBD-II
U3566
Anode Inlet Pressure Sensor 1 Circuit
NetworkRead the code
Generic OBD-II
U3567
Anode Inlet Pressure Sensor 2 Circuit
NetworkRead the code
Generic OBD-II
U3568
Anode Multifunction Valve Control Circuit
NetworkRead the code
Generic OBD-II
U3569
Anode Multifunction Valve
NetworkRead the code
Generic OBD-II
U356A
Anode Drain Valve Control Circuit
NetworkRead the code
Generic OBD-II
U356B
Anode Drain Valve
NetworkRead the code
Generic OBD-II
U356C
Anode Header Drain Valve Control Circuit
NetworkRead the code
Generic OBD-II
U356D
Anode Header Drain Valve
NetworkRead the code
Generic OBD-II
U356E
Anode Drain Valve Heater Relay Control Circuit
NetworkRead the code
Generic OBD-II
U356F
Anode Header Drain Valve Heater Relay Control Circuit
NetworkRead the code
Generic OBD-II
U3570
Stack Inlet Coolant Temperature Sensor Circuit
NetworkRead the code
Generic OBD-II
U3571
Stack Outlet Coolant Temperature Sensor 1 Circuit
NetworkRead the code
Generic OBD-II
U3572
Stack Outlet Coolant Temperature Sensor 2 Circuit
NetworkRead the code
Generic OBD-II
U3573
Coolant Mixing Valve Control Circuit
NetworkRead the code
Generic OBD-II
U3574
Coolant Mixing Valve
NetworkRead the code
Generic OBD-II
U3575
Coolant Mixing Valve Position Sensor Circuit
NetworkRead the code
Generic OBD-II
U3576
Stack Differential Pressure Sensor Circuit
NetworkRead the code
These are code references, not a list of confirmed faults on every vehicle. Read the source and applicability notes, then match the exact vehicle, year, engine and scan report.