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Fault codes U03xx: software incompatibility

Communication codes between control units. The cause is often a connector, a wire, a power supply or a weak battery: the control unit named is not necessarily faulty.

Official codes: 80, from smallest to largest. Tap a code to get a direct link to share.

CodeMeaning
U0300Internal Control Module Software Incompatibility
U0301Software Incompatibility with ECM/PCM
U0302Software Incompatibility with TCM
U0303Software Incompatibility with Transfer Case Control Module
U0304Invalid Data Received from Transmission Control Module
U0305Software Incompatibility with Cruise Control Module
U0306Software Incompatibility with Fuel Injector Control Module
U0307Software Incompatibility with Glow Plug Control Module
U0308Software Incompatibility with Body Control Module
U0309Software Incompatibility With Alternative Fuel Control Module
U030ASoftware Incompatibility With Evaporative Emission System Leak Detection Control Module
U030BSoftware Incompatibility With Glow Plug Control Module 2
U030CSoftware Incompatibility With Reductant Quality Module
U030DSoftware Incompatibility With NOx Sensor A
U030ESoftware Incompatibility With NOx Sensor B
U030FSoftware Incompatibility With Reductant Control Module
U0310Software Incompatibility With Fuel Pump Control Module
U0311Software Incompatibility With Drive Motor Control Module
U0312Software Incompatibility With Battery Energy Control Module A
U0313Software Incompatibility With Battery Energy Control Module B
U0314Software Incompatibility With Four-Wheel Drive Clutch Control Module
U0315Software Incompatibility with ABS Control Module
U0316Software Incompatibility with Park Brake Control Module
U0317Software Incompatibility with Brake System Control Module
U0318Software Incompatibility with Power Steering Control Module
U0319Software Incompatibility with Anti-Lock Brake System Control Module
U031ASoftware Incompatibility With Transmission Range Control Module
U031BSoftware Incompatibility With DC/DC Converter Control Module A
U031CSoftware Incompatibility With Brake System Control Module B
U031DSoftware Incompatibility With Parking Assist Control Module A
U031ESoftware Incompatibility With Parking Assist Control Module B
U031FSoftware Incompatibility With Accessory Protocol Interface Module
U0320Software Incompatibility With Power Steering Control Module
U0321Software Incompatibility With Suspension Control Module A
U0322Software Incompatibility with Body Control Module B
U0323Software Incompatibility With Instrument Panel Control Module
U0324Software Incompatibility with HVAC Control Module
U0325Software Incompatibility with Auxiliary Heater Control Module
U0326Software Incompatibility With Vehicle Immobilizer Control Module
U0327Software Incompatibility with Powertrain Control Module
U0328Software Incompatibility With Steering Angle Sensor Module
U0329Software Incompatibility With Steering Column Control Module
U032ASoftware Incompatibility With A/C Compressor Control Module
U0330Software Incompatibility With Tire Pressure Monitor Module
U0331Software Incompatibility With Body Control Module A
U0332Software Incompatibility With Multi-axis Acceleration Sensor Module A
U0333Software Incompatibility With Gear Shift Control Module B
U0334Software Incompatibility With Radio
U0335Software Incompatibility With Hybrid/EV Battery Pack Sensor Module
U0336Software Incompatibility With Restraints Control Module
U0337Software Incompatibility With Battery Charger Control Module A
U0338Software Incompatibility With Remote Function Actuation Module
U0339Software Incompatibility With Body Control Module B
U033ASoftware Incompatibility With Hybrid/EV Battery Interface Control Module A
U033BSoftware Incompatibility With Hybrid/EV Battery Interface Control Module B
U033CSoftware Incompatibility With Hybrid/EV Battery Interface Control Module C
U033DSoftware Incompatibility With Hybrid/EV Battery Interface Control Module D
U033ESoftware Incompatibility With Hybrid/EV Battery Interface Control Module E
U033FSoftware Incompatibility With Hybrid/EV Battery Interface Control Module F
U0340Software Incompatibility With Hybrid/EV Battery Interface Control Module G
U0341Software Incompatibility With Hybrid/EV Battery Interface Control Module H
U0342Software Incompatibility With Hybrid/EV Battery Interface Control Module I
U0343Software Incompatibility With Hybrid/EV Battery Interface Control Module J
U0344Software Incompatibility With Hybrid/EV Battery Interface Control Module K
U0345Software Incompatibility With Hybrid/EV Battery Interface Control Module L
U0346Software Incompatibility With Hybrid/EV Battery Interface Control Module M
U0347Software Incompatibility With Hybrid/EV Battery Interface Control Module N
U0348Software Incompatibility With Hybrid/EV Battery Interface Control Module O
U0349Software Incompatibility With Hybrid/EV Battery Interface Control Module P
U034ASoftware Incompatibility With Engine Disconnect Clutch
U034BSoftware Incompatibility With Brake Booster Control
U034CSoftware Incompatibility With Battery Energy Control Module C
U034DSoftware Incompatibility With Vehicle Thermal Management Control Module
U034ESoftware Incompatibility With Active Grille Air Shutter Module A
U034FSoftware Incompatibility With Active Grille Air Shutter Module B
U0350Software Incompatibility With Active Grille Air Shutter Module C
U0351Software Incompatibility With Active Grille Air Shutter Module D
U0352Software Incompatibility With NOx Sensor C
U0353Software Incompatibility With Ion Sense Module
U0354Software Incompatibility With Hybrid/EV Battery Inductive Charger Control Module

← U02xx · U04xx →

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Official meanings: OBDex (public domain, CC0). Manufacturer codes: dtc-database (MIT license), probable meanings not verified by the manufacturers. The same meaning can vary depending on the model: always have a diagnosis confirmed by a professional.