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DTC Code Glossary

Look up any of the 1,527 OBD-II diagnostic trouble codes in our database — what it means, and how we can permanently remove it from your ECU.

All P B C U
U302F
Ignition Output Accessory
U3030
Ignition Output Start
U3031
Ignition Output Off
U3032
Ignition Output Accessory/Off
U3033
Control Module Security Certificate Missing/Invalid
U3034
Communication Authentication Key/Certificate Missing/Invalid
U3035
Communication Authentication Signal Invalid Data
U3036
Communication Authentication Signal Performance
U3500
Control Module Input Power A Circuit Range/Performance
U3501
Control Module Input Power A Circuit Low
U3502
Control Module Input Power A Circuit High
U3503
Control Module Input Power A Circuit Intermittent/Erratic
U3504
Control Module Input Power B Circuit Range/Performance
U3505
Control Module Input Power B Circuit Low
U3506
Control Module Input Power B Circuit High
U3507
Control Module Input Power B Circuit Intermittent/Erratic
U3508
Control Module Input Power C Circuit Range/Performance
U3509
Control Module Input Power C Circuit Low
U350A
Control Module Input Power C Circuit High
U350B
Control Module Input Power C Circuit Intermittent/Erratic
U350C
Control Module Cooling Fan Circuit/Open
U350D
Control Module Cooling Fan Circuit Low
U350E
Control Module Cooling Fan Circuit High
U350F
Control Module Cooling Fan Circuit Range/Performance
U3510
Control Module Missing Calibration
U3511
High Voltage System Interlock Circuit B
U3512
High Voltage System Interlock Circuit B Performance
U3513
High Voltage System Interlock Circuit B Low
U3514
High Voltage System Interlock Circuit B High
U3515
High Voltage System Interlock Circuit C
U3516
High Voltage System Interlock Circuit C Performance
U3517
High Voltage System Interlock Circuit C Low
U3518
High Voltage System Interlock Circuit C High
U3519
High Voltage System Interlock Circuit D
U351A
High Voltage System Interlock Circuit D Performance
U351B
High Voltage System Interlock Circuit D Low
U351C
High Voltage System Interlock Circuit D High
U351D
High Voltage System Interlock Circuit E
U351E
High Voltage System Interlock Circuit E Performance
U351F
High Voltage System Interlock Circuit E Low
U3520
High Voltage System Interlock Circuit E High
U3521
High Voltage System Interlock Circuit F
U3522
High Voltage System Interlock Circuit F Performance
U3523
High Voltage System Interlock Circuit F Low
U3524
High Voltage System Interlock Circuit F High
U3525
High Voltage System Interlock Circuit G
U3526
High Voltage System Interlock Circuit G Performance
U3527
High Voltage System Interlock Circuit G Low
U3528
High Voltage System Interlock Circuit G High
U3529
High Voltage System Interlock Circuit H
U352A
High Voltage System Interlock Circuit H Performance
U352B
High Voltage System Interlock Circuit H Low
U352C
High Voltage System Interlock Circuit H High
U352D
High Voltage System Interlock Circuit J
U352E
High Voltage System Interlock Circuit J Performance
U352F
High Voltage System Interlock Circuit J Low
U3530
High Voltage System Interlock Circuit J High
U3531
High Voltage System Interlock Circuit K
U3532
High Voltage System Interlock Circuit K Performance
U3533
High Voltage System Interlock Circuit K Low
U3534
High Voltage System Interlock Circuit K High
U3535
High Voltage System Interlock Circuit L
U3536
High Voltage System Interlock Circuit L Performance
U3537
High Voltage System Interlock Circuit L Low
U3538
High Voltage System Interlock Circuit L High
U3539
High Voltage System Interlock Circuit M
U353A
High Voltage System Interlock Circuit M Performance
U353B
High Voltage System Interlock Circuit M Low
U353C
High Voltage System Interlock Circuit M High
U353D
High Voltage System Interlock Circuit N
U353E
High Voltage System Interlock Circuit N Performance
U353F
High Voltage System Interlock Circuit N Low
U3540
High Voltage System Interlock Circuit N High
U3541
High Voltage System Interlock Circuit O
U3542
High Voltage System Interlock Circuit O Performance
U3543
High Voltage System Interlock Circuit O Low
U3544
High Voltage System Interlock Circuit O High
U3545
High Voltage System Interlock Circuit P
U3546
High Voltage System Interlock Circuit P Performance
U3547
High Voltage System Interlock Circuit P Low
U3548
High Voltage System Interlock Circuit P High
U3549
Hydrogen Tank High Pressure Sensor 1 Circuit
U354A
Hydrogen Tank A Temperature Sensor 1 Circuit
U354B
Hydrogen Tank A Temperature Sensor 2 Circuit
U354C
Hydrogen Tank B Temperature Sensor 1 Circuit
U354D
Hydrogen Tank B Temperature Sensor 2 Circuit
U354E
Hydrogen Tank C Temperature Sensor 1 Circuit
U354F
Hydrogen Tank C Temperature Sensor 2 Circuit
U3550
Hydrogen Tank A Valve Control Circuit
U3551
Hydrogen Tank A Valve Enable Circuit
U3552
Hydrogen Tank A Valve Performance
U3553
Hydrogen Tank B Valve Control Circuit
U3554
Hydrogen Tank B Valve Enable Circuit
U3555
Hydrogen Tank B Valve Performance
U3556
Hydrogen Tank C Valve Control Circuit
U3557
Hydrogen Tank C Valve Enable Circuit
U3558
Hydrogen Tank C Valve
U3559
Air Inlet Pressure Sensor Circuit
U355A
Charge Air Cooler Outlet Pressure Sensor 1 Circuit
U355B
Charge Air Cooler Outlet Pressure Sensor 2 Circuit