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DTC Code Glossary

Look up any of the 11,957 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
U064D
Lost Communication With Trailer Brake Control Switch
U064E
Lost Communication With EGR Cooler Bypass Position Sensor Bank 1
U064F
Lost Communication With Intake Manifold Runner Position Sensor Bank 1
U0650
Lost Communication With Exhaust Pressure Control Valve A Sensor/Switch
U0651
Lost Communication With EGR Sensor A
U0652
Lost Communication With EGR Sensor B
U0653
Lost Communication With EGR Sensor C
U0654
Lost Communication With Diesel Intake Air Flow A Position Sensor
U0655
Lost Communication With Diesel Intake Air Flow B Position Sensor
U0656
Lost Communication With Turbocharger/Supercharger Boost Control A Position Sensor
U0657
Lost Communication With Turbocharger/Supercharger Bypass Valve A Position Sensor
U0658
Lost Communication With Windshield Temperature Sensor
U0659
Lost Communication With Left Front Temperature Actuator
U065A
Lost Communication With Right Front Temperature Actuator
U065B
Lost Communication With Left Front Mode Actuator
U065C
Lost Communication With Right Front Mode Actuator
U065D
Lost Communication With Air Intake Actuator
U065E
Lost Communication With Ram Air Actuator
U065F
Lost Communication With Left Rear Temperature Actuator A
U0660
Lost Communication With Left Rear Temperature Actuator B
U0661
Lost Communication With Right Rear Temperature Actuator A
U0662
Lost Communication With Right Rear Temperature Actuator B
U0663
Lost Communication With Rear Mode Actuator
U0664
Lost Communication With Rear HVAC Air Cutoff Actuator
U0665
Lost Communication With Fuel Rail Pressure Sensor Bank 2
U0666
Lost Communication With Reductant Pressure Sensor
U0667
Lost Communication With Engine Oil Temperature Sensor A
U0668
Lost Communication With Engine Oil Level Sensor Circuit
U0669
Lost Communication With EGR Sensor D
U066A
Lost Communication With EGR Sensor E
U066B
Lost Communication With Turbocharger/Supercharger Bypass Valve B Position Sensor
U066C
Lost Communication With Exhaust Heat Exchanger Bypass Valve Actuator B
U066D
Lost Communication With Charge Air Cooler Temperature Sensor Bank 1
U066E
Lost Communication With Charge Air Cooler Temperature Sensor Bank 2
U066F
Lost Communication With Low Pressure Fuel System Sensor
U0670
Lost Communication With Fuel Temperature Sensor A
U0671
Lost Communication With Fuel Temperature Sensor B
U0672
Lost Communication With Engine Coolant Pump
U0673
Lost Communication With Ion Sense Module
U0674
Lost Communication With Wastegate Position Sensor B
U0675
Lost Communication With Turbocharger/Supercharger Speed Sensor A
U0676
Lost Communication With Fuel Level Sensor A
U0677
Lost Communication With Fuel Level Sensor B
U0678
Lost Communication With Fuel Level Sensor C
U0679
Lost Communication With Transmission Fluid Pressure Sensor/Switch A
U067A
Lost Communication With Transmission Fluid Pressure Sensor/Switch B
U067B
Lost Communication With Engine Disconnect Clutch Pressure Sensor
U067C
Lost Communication With Fan 3
U067D
Lost Communication With Fan 4
U067E
Lost Communication With Exhaust Pressure Control Valve B Sensor/Switch
U067F
Lost Communication With Barometric Pressure Sensor A
U0680
Lost Communication With Barometric Pressure Sensor B
U0681
Lost Communication With Throttle/Pedal Position Sensor/Switch D
U0682
Lost Communication With Throttle/Pedal Position Sensor/Switch E
U0683
Lost Communication With Throttle/Pedal Position Sensor/Switch F
U0684
Lost Communication With Catalyst Temperature Bank 1 Sensor 1
U0685
Lost Communication With Catalyst Temperature Bank 1 Sensor 2
U0686
Lost Communication With Catalyst Temperature Bank 2 Sensor 1
U0687
Lost Communication With Catalyst Temperature Bank 2 Sensor 2
U0688
Lost Communication With Throttle Position Sensor/Switch G
U0689
Lost Communication With Turbocharger/Supercharger B Temperature Sensor
U068A
Lost Communication With Barometric Pressure Sensor C
U068B
Lost Communication With Turbocharger/Supercharger Inlet Pressure Sensor A
U068C
Lost Communication With Turbocharger/Supercharger Inlet Pressure Sensor B
U068D
Lost Communication With EGR Temperature Sensor A
U068E
Lost Communication With EGR Temperature Sensor B
U068F
Lost Communication With EGR Temperature Sensor C
U0690
Lost Communication With EGR Temperature Sensor D
U0691
Lost Communication With Exhaust Pressure Sensor A
U0692
Lost Communication With Exhaust Pressure Sensor B
U0693
Lost Communication With Humidity Sensor
U0694
Lost Communication With Hybrid/EV Battery Pack Coolant Pump A
U0695
Lost Communication With Hybrid/EV Battery Pack Coolant Pump B
U0696
Lost Communication With Particulate Filter Pressure Sensor C
U0697
Lost Communication With Particulate Filter Pressure Sensor D
U0698
Lost Communication with Coolant Pump “E”
U0699
Lost Communication with Coolant Pump “F”
U069A
Lost Communication With Exhaust Gas Temperature Sensor Bank 1 Sensor 3
U069B
Lost Communication With Exhaust Gas Temperature Sensor Bank 1 Sensor 4
U069C
Lost Communication With Exhaust Gas Temperature Sensor Bank 2 Sensor 3
U069D
Lost Communication With Exhaust Gas Temperature Sensor Bank 2 Sensor 4
U069E
Lost Communication with Coolant Heater A
U069F
Lost Communication With Exhaust Pressure Sensor C
U0901
Invalid Data from Ion Sense Module
U1000
Manufacturer Controlled DTC
U1001
SCP (J1850) Invalid or Missing Data for Primary Id
U1002
SCP (J1850) Invalid or Missing Data for Primary Id
U1003
SCP (J1850) Invalid or Missing Data for Primary Id
U1004
SCP (J1850) Invalid or Missing Data for EEC Programming
U1005
SCP (J1850) Invalid or Missing Data for EEC Programming
U1006
SCP (J1850) Invalid or Missing Data for Primary Id
U1007
SCP (J1850) Invalid or Missing Data for Primary Id
U1008
SCP (J1850) Invalid or Missing Data for Engine Torque
U1009
SCP (J1850) Invalid or Missing Data for Engine Torque
U1010
SCP (J1850) Invalid or Missing Data for Engine Air Intake
U1011
SCP (J1850) Invalid or Missing Data for Engine Air Intake
U1012
SCP (J1850) Invalid or Missing Data for Primary Id
U1013
SCP (J1850) Invalid or Missing Data for Primary Id
U1014
SCP (J1850) Invalid or Missing Data for Primary Id
U1015
SCP (J1850) Invalid or Missing Data for Primary Id