U01xx OBD-II Codes (U0100–U0199)

100 fault codes in the U01xx range. Click any code for causes, diagnostic steps, severity, and common fixes.

U0100 moderate
Lost Communication With ECM/PCM "A"
U0101 moderate
Lost Communication with TCM
U0102 moderate
Lost Communication with Transfer Case Control Module
U0103 moderate
Lost Communication With Gear Shift Module
U0104 moderate
Lost Communication With Cruise Control Module
U0105 moderate
Lost Communication With Fuel Injector Control Module
U0106 moderate
Lost Communication With Glow Plug Control Module
U0107 moderate
Lost Communication With Throttle Actuator Control Module
U0108 moderate
Lost Communication With Alternative Fuel Control Module
U0109 moderate
Lost Communication With Fuel Pump Control Module
U0110 moderate
Lost Communication With Drive Motor Control Module
U0111 moderate
Lost Communication With Battery Energy Control Module "A"
U0112 moderate
Lost Communication With Battery Energy Control Module "B"
U0113 moderate
Lost Communication With Emissions Critical Control Information
U0114 moderate
Lost Communication With Four-Wheel Drive Clutch Control Module
U0115 moderate
Lost Communication With ECM/PCM "B"
U0116 moderate
Lost Communication With Coolant Temperature Control Module
U0117 moderate
Lost Communication With PTO Control Module
U0118 moderate
Lost Communication With Fuel Additive Control Module
U0119 moderate
Lost Communication With Fuel Cell Control Module
U0120 moderate
Lost Communication With Starter / Generator Control Module
U0121 serious
Lost Communication With Anti-Lock Brake System (ABS) Control Module
U0122 serious
Lost Communication With Vehicle Dynamics Control Module
U0123 moderate
Lost Communication With Yaw Rate Sensor Module
U0124 moderate
Lost Communication With Lateral Acceleration Sensor Module
U0125 moderate
Lost Communication With Multi-axis Acceleration Sensor Module
U0126 serious
Lost Communication With Steering Angle Sensor Module
U0127 moderate
Lost Communication With Tire Pressure Monitor Module
U0128 serious
Lost Communication With Park Brake Control Module
U0129 serious
Lost Communication With Brake System Control Module
U0130 serious
Lost Communication With Steering Effort Control Module
U0131 serious
Lost Communication With Power Steering Control Module
U0132 moderate
Lost Communication With Ride Level Control Module
U0133 moderate
Lost Communication With Active Roll Control Module
U0134 serious
Lost Communication With Power Steering Control Module Rear
U0135 moderate
Lost Communication With Differential Control Module Front
U0136 moderate
Lost Communication With Differential Control Module Rear
U0137 serious
Lost Communication With Trailer Brake Control Module
U0138 moderate
Lost Communication With All Terrain Control Module
U0139 moderate
Lost Communication With Suspension Control Module "B"
U0140 moderate
Lost Communication With Body Control Module
U0141 moderate
Lost Communication With Body Control Module "A"
U0142 moderate
Lost Communication With Body Control Module "B"
U0143 moderate
Lost Communication With Body Control Module "C"
U0144 moderate
Lost Communication With Body Control Module "D"
U0145 moderate
Lost Communication With Body Control Module "E"
U0146 moderate
Lost Communication With Gateway "A"
U0147 moderate
Lost Communication With Gateway "B"
U0148 moderate
Lost Communication With Gateway "C"
U0149 moderate
Lost Communication With Gateway "D"
U0150 moderate
Lost Communication With Gateway "E"
U0151 serious
Lost Communication With Restraints Control Module
U0152 serious
Lost Communication With Side Restraints Control Module Left
U0153 serious
Lost Communication With Side Restraints Control Module Right
U0154 serious
Lost Communication With Restraints Occupant Sensing Control Module
U0155 moderate
Lost Communication With Instrument Panel Cluster (IPC) Control Module
U0156 moderate
Lost Communication With Information Center "A"
U0157 moderate
Lost Communication With Information Center "B"
U0158 moderate
Lost Communication With Head Up Display
U0159 moderate
Lost Communication With Parking Assist Control Module "A"
U0160 moderate
Lost Communication With Audible Alert Control Module
U0161 moderate
Lost Communication With Compass Module
U0162 moderate
Lost Communication With Navigation Display Module
U0163 moderate
Lost Communication With Navigation Control Module
U0164 moderate
Lost Communication With HVAC Control Module
U0165 moderate
Lost Communication With Rear HVAC Control Module
U0166 moderate
Lost Communication With Auxiliary Heater Control Module
U0167 serious
Lost Communication With Vehicle Immobilizer Control Module
U0168 moderate
Lost Communication With Vehicle Security Control Module
U0169 moderate
Lost Communication With Sunroof Control Module
U0170 serious
Lost Communication With Restraints System Sensor A
U0171 serious
Lost Communication With Restraints System Sensor B
U0172 serious
Lost Communication With Restraints System Sensor C
U0173 serious
Lost Communication With Restraints System Sensor D
U0174 serious
Lost Communication With Restraints System Sensor E
U0175 serious
Lost Communication With Restraints System Sensor F
U0176 serious
Lost Communication With Restraints System Sensor G
U0177 serious
Lost Communication With Restraints System Sensor H
U0178 serious
Lost Communication With Restraints System Sensor I
U0179 serious
Lost Communication With Restraints System Sensor J
U0180 moderate
Lost Communication With Automatic Lighting Control Module
U0181 moderate
Lost Communication With Headlamp Leveling Control Module
U0182 moderate
Lost Communication With Front Lighting Control Module
U0183 moderate
Lost Communication With Rear Lighting Control Module
U0184 moderate
Lost Communication With Radio
U0185 moderate
Lost Communication With Antenna Control Module
U0186 moderate
Lost Communication With Audio Amplifier "A"
U0187 moderate
Lost Communication With Digital Disc Player/Changer Module "A"
U0188 moderate
Lost Communication With Digital Disc Player/Changer Module "B"
U0189 moderate
Lost Communication With Digital Disc Player/Changer Module "C"
U0190 moderate
Lost Communication With Digital Disc Player/Changer Module "D"
U0191 moderate
Lost Communication With Television
U0192 moderate
Lost Communication With Personal Computer
U0193 moderate
Lost Communication With "Digital Audio Control Module A"
U0194 moderate
Lost Communication With "Digital Audio Control Module B"
U0195 moderate
Lost Communication With Subscription Entertainment Receiver Module
U0196 moderate
Lost Communication With Rear Seat Entertainment Control Module
U0197 moderate
Lost Communication With Telephone Control Module
U0198 moderate
Lost Communication With Telematic Control Module
U0199 moderate
Lost Communication With "Door Control Module A"
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