U**** – U Codes

U0106 Lost Communication With Glow Plug Control Module

The U0106 code indicates a loss of communication between the vehicle’s Glow Plug Control Module (GPCM) and other control modules. This code is commonly seen...

U0156 Lost Communication With Information Center “A”

The U0156 trouble code indicates a lost connection between the vehicle’s Information Center “A” (IC-A) and other control modules. This code is related to the...

U0107 Lost Communication With Throttle Actuator Control Module

The U0107 code is a diagnostic trouble code that indicates a loss of communication between the Throttle Actuator Control (TAC) Module and other control modules...

U0109 Lost Communication With Fuel Pump Control Module

The U0109 trouble code indicates that there is a communication problem between the Fuel Pump Control Module (FPCM) and other control modules in the vehicle....

U0200: Lost Communication with Door Control Module B

Code Explanation DTC U0200 indicates a loss of communication with the Door Control Module B. This module is responsible for controlling various functions related to...

U3004 Accessory Power Relay

U0101 Lost Communication with TCM

The U0101 code indicates a communication issue between the Transmission Control Module (TCM) and other control modules in the vehicle. When the Powertrain Control Module...

U0500 ISO/SAE Reserved

U0030 Vehicle Communication Bus A (+) Open

The U0030 code indicates an open circuit issue in the Vehicle Communication Bus A. This communication bus is used in vehicles to facilitate communication between...

U3000 Control Module Failure or Erratic

Encountering the U3000 error code often signals a serious issue with a vehicle’s control module. This malfunction can cause a range of vehicle performance problems,...

U3100 ISO/SAE Reserved

U0259 Lost Communication With Special Purpose Vehicle Control Module “A”

When you encounter the U0259 error code, it means that your vehicle’s communication with the special purpose vehicle control module “A” has been lost. This issue can result in...

U300A Ignition Switch

U2000 Manufacturer Controlled DTC

U0108 Lost Communication With Alternative Fuel Control Module

The U0108 code is a generic communication system diagnostic trouble code that can occur in various vehicles. It indicates that the Alternate Fuel Control Module...

U041A ISO/SAE Reserved

U300C Ignition Input Off/On/Start

U0100 Lost Communication With ECM/PCM “A”

The U0100 code is a diagnostic trouble code that indicates a loss of communication between the vehicle’s ECM (Engine Control Module) or PCM (Powertrain Control...

U0105 Lost Communication With Fuel Injector Control Module

The U0105 trouble code is a generic communication system diagnostic trouble code that occurs when the Fuel Injector Control Module (FICM) and other control modules...

U3003 Battery Voltage

U058B ISO/SAE Reserved

U0231 Lost Communication With Rain Sensing Module

This article will provide troubleshooting steps for the U0231 code, which indicates a loss of communication with the vehicle’s rain sensing module. The rain sensing...

U0114 Lost Communication With Four-Wheel Drive Clutch Control Module

The U0114 trouble code refers to a communication issue between the vehicle’s Four-Wheel Drive Clutch Control Module (FWDCCM) and other control modules. This generic trouble code can affect various...

U0102 Lost Communication with Transfer Case Control Module

The U0102 code is a diagnostic trouble code that indicates a loss of communication between the Transfer Case Control Module (TCCM) and other control modules...

U0026 Low Speed CAN Communication Bus (-) High

The U0026 code, also known as the “Low Speed CAN Communication Bus Performance,” is an important diagnostic code used in vehicle maintenance. This code is...

U051A Invalid Data Received From “Door Switch E”

Introduction The trouble code U051A denotes a communication error where invalid data is received from “Door Switch E.” This issue can arise due to various...

U0434 Invalid Data Received From Active Roll Control Module

As a driver, encountering an error code can be a frustrating experience, especially if you’re unsure of its meaning or how to resolve it. One such error...

U0028 Vehicle Communication Bus A

U0024 Low Speed CAN Communication Bus (-) Open

Vehicle networks rely on a complex system that communicates through various components. While these systems are usually reliable, errors can occasionally occur, causing a range of...

U0009 High Speed CAN Communication Bus (-) shorted to Bus (+)

1. Introduction to U0009 The U0009 code is a complex and challenging issue that many mechanics and car enthusiasts encounter. It’s related to the High...

U0002 High Speed CAN Communication Bus Performance

The U0002 code is related to the high-speed CAN communication bus performance in vehicles. This diagnostic trouble code (DTC) indicates a problem with the communication...

U0073 Control Module Communication Bus A Off

The U0073 code, known as the Control Module Communication Bus A Off, is a common vehicle issue that indicates a communication problem between different control...

U0142 Lost Communication With Body Control Module “B”

The U0142 trouble code refers to a lost communication issue between the engine control module (ECM) and the body control module (BCM) “B”. The BCM...

U0439 Invalid Data Received From All Terrain Control Module

If you are experiencing issues with your vehicle, particularly the control system, then you may have encountered the U0439 error code. This code points towards a problem...

U0032 Vehicle Communication Bus A (+) High

If you are experiencing issues with your vehicle’s communication bus, it may be related to the U0032 code. This fault can cause warning lights, erratic behavior,...

U0001 High Speed CAN Communication Bus

The U0001 code, also known as the “High-Speed CAN Communication Bus,” indicates that there is an error within the high-speed CAN communication bus circuit or...

U010E Lost Communication With Reductant Control Module

The U010E code is a generic communication system diagnostic trouble code that occurs when there is a loss of communication between the Reductant Control Module...

U0064 Vehicle Communication Bus E

U0300 Internal Control Module Software Incompatibility

Are you experiencing issues with your vehicle’s internal control module? If you’re seeing the U0300 error code, it likely indicates a software incompatibility problem that...

U0561 Invalid Data Received From Seat Control Switch Module “A”

1. Introduction to U0561 Modern vehicles have transformed into complex systems with interlinking electronics. These advancements enhance driving experience but also introduce complexities in diagnostics....

U0557 Invalid Data Received From Front Controls Interface Module “A”

Welcome to our troubleshooting guide for the U0557 Invalid Data Received From Front Controls Interface Module “A” issue. If you’ve encountered this error code, you may have experienced intermittent passenger power window...

U0121: Lost Communication with Anti-Lock Brake System (ABS) Control Module

Code Explanation DTC U0121 is a communication code that indicates a loss of communication between the vehicle’s onboard diagnostic system and the Anti-Lock Brake System...

U025A Lost Communication With Special Purpose Vehicle Control Module “B”

1. Introduction to U025A Code The diagnostic trouble code (DTC) U025A is associated with a loss of communication with the Special Purpose Vehicle Control Module...

U0046 Vehicle Communication Bus C

U1000 – CAN bus network code

U025E, U025F ISO/SAE Reserved

U0037 Vehicle Communication Bus B

U0000 ISO/SAE Reserved

U3005 Retained Accessory Power

U3010 Ignition Input Start

U0549 Invalid Data Received From Remote Accessory Module

Is your vehicle displaying an error code message? Are you currently experiencing communication problems with your car’s systems? If your answer is yes, then you...

U041F ISO/SAE Reserved

U0038 Vehicle Communication Bus B Performance

Is your vehicle displaying the U0038 error code? This diagnostic trouble code (DTC) is specifically related to communication Bus B performance. It can lead to warning lights, communication failures, and other...

U0234 Lost Communication With Convenience Recall Module

The U0234 trouble code indicates a loss of communication between the vehicle’s convenience recall module (CRM) and other control modules. This code is a generic...

U0167 Lost Communication With Vehicle Immobilizer Control Module

The U0167 error code indicates a loss of communication between the vehicle immobilizer control module and other control modules in the vehicle. This code is...

U055F, U0560 ISO/SAE Reserved

U029E Lost Communication With NOX Sensor “B”

The U029E error code indicates a loss of communication between NOX Sensor “B” and other control modules in the vehicle. This code is commonly found in OBD-II vehicles and is related...

U0055 Vehicle Communication Bus D

U044A Invalid Data Received From Gateway “D”

1. Introduction to U044A Modern vehicles rely heavily on intricate communication networks to ensure seamless operation across various systems. The U044A code indicates an issue...

U3011 Ignition Input Off

U0297 Lost Communication With AC to DC Converter Control Module “B”

The U0297 error code is a common issue encountered by vehicle owners, signaling a communication problem with Module “B” in the AC to DC converter control module. This error...

U010B Lost Communication With Exhaust Gas Recirculation Control Module “B”

The U010B code indicates a communication issue between the Exhaust Gas Recirculation Control Module B (EGRCM-B) and other control modules in the vehicle. This trouble code is related to the Controller Area Network bus communication system,...

U0307 Software Incompatibility with Glow Plug Control Module

1. Introduction to U0307 Welcome to our comprehensive guide on the U0307 code, a significant indicator of software incompatibility between a vehicle’s main control module...

U0063 Vehicle Communication Bus D (-) shorted to Bus D (+)

1. Introduction to U0063 The U0063 code is a significant indicator of an issue within a vehicle’s communication network. Specifically, it points to a situation...

U0057 Vehicle Communication Bus D (+) Open: Deciphering the Diagnostic Challenge

When the dashboard of a vehicle lights up with the U0057 error code, it signals an urgent call to action for both automotive professionals and vehicle...

U0056 Vehicle Communication Bus D Performance

1. Introduction Welcome to our comprehensive guide on the U0056 diagnostic trouble code, specifically addressing the “Vehicle Communication Bus D Performance” issue. In the modern...

U0104 Lost Communication With Cruise Control Module

The U0104 error code indicates that there is a communication problem between the vehicle’s Cruise Control Module (CCM) and other control modules. This generic code...

U0069 Vehicle Communication Bus E (-) Open

Introduction: The U0069 DTC (Diagnostic Trouble Code) refers to a vehicle communication bus E (-) open circuit. In modern vehicles, various electronic control modules communicate...

U0255 Lost Communication With Front Display Interface Module

The U0255 error code indicates a loss of communication with the front display interface module in vehicles. This issue can affect various vehicle makes and...

U023F ISO/SAE Reserved

U0519 Invalid Data Received From “Door Switch D”

Introduction The trouble code U0519 is indicative of a communication error where invalid data is received from “Door Switch D.” This error might occur due...

U0207 Lost Communication With Movable Roof Control Module

1. Introduction to U0207 Modern vehicles are a marvel of interconnected systems. One such system that enhances the luxury quotient is the movable roof, often...

U300F Ignition Input Accessory

U0155 Lost Communication With Instrument Panel Cluster (IPC) Control Module

If you encounter a U0155 code indicating a communication issue with your vehicle’s Instrument Panel Cluster Control Module, it’s important to understand the potential troubleshooting...

U011E, U011F ISO/SAE Reserved

U0401 Invalid Data Received From ECM/PCM

The U0401 code refers to invalid data received between the Powertrain Control Module (PCM), the Engine Control Module (ECM), and other control modules in your...

U300D Ignition Input On/Start

U300E Ignition Input On

U0113 Lost Communication With Emissions Critical Control Information

The U0113 trouble code signifies a lost communication problem between the vehicle’s Engine Control Module (ECM) and the Variable Valve Event and Lift (VVEL) Control...

U0208 Lost Communication With Heated Seat Control Module

The U0208 code is a diagnostic trouble code that indicates a loss of communication between the vehicle’s Seat Control Module A (SCM-A) and other control...

U0103 Lost Communication With Gear Shift Module

The U0103 trouble code indicates a lost communication issue between the vehicle’s gear shift module and other control modules. This can occur in various makes...