DTC Types can include P-codes, C-codes, B-codes, and U-codes, each indicating a different type of issue within a vehicle’s electronic control system. DTC Format can vary depending on the standard or regulation, such as SAE J2012 or ISO 14229-1, that is being used for the vehicle’s electronic control system.

2025年1月26日 · DTCs, short for Diagnostic Trouble Codes, are alphanumeric codes generated by a vehicle’s onboard diagnostics (OBD) system. These codes are standardized under the OBD-II protocol for vehicles manufactured since 1996 or the J1939 protocol for heavy-duty vehicles. They help pinpoint specific issues with a vehicle’s systems.

UDS DTC（ISO 14229） 使用三个字节，两个最高有效字节（DTC High Byte 和 DTC Middle Byte）根据实施的诊断协议指定的DTC Format Identifier = 0x01或0x04进行解码；最低有效字节（DTC Low Byte）根据SAE J2012-DA Failure Type Byte (FTB) 表进行解码。 下图显示了3字节DTCFormatIdentifier = 0x01或0x04 DTC结构的示例。 使用DTCFormatIdentifier = 0x01或0x04作为数据总线值 0x923411的3字节DTC，将作为制造商控制的车身代码B1234–11显示给技术人 …

DTC（Diagnostic Trouble Code）是诊断故障码的缩写，用于表示车辆中检测到的某个问题。每个DTC都代表一个特定的故障或问题，通常与生产或维修有关。DTC由3个字节组成，通过诊断事件映射到特定的诊断事件，从而使这些事件通过DTC代码唯一标识。

2024年10月15日 · DTC codes are put into two categories: generic and manufacturer-specific. These codes are common across different vehicle makes and models. They provide a general indication of the problem, such as a misfire or sensor malfunction. Generic codes are further divided into two: OBD-II codes: These are used in light and medium-duty vehicles.

We know that there are different types of DTC and their format. But for our understanding, let us take a 3-Byte DTC and discuss about it for how to understand with each digit. DTC codes are standardized codes used to diagnose issues with a vehicle’s engine and powertrain.

2013年3月5日 · Clear the MIL and the DTC with a scan tool. The control module stores the DTC information into memory when the diagnostic runs and fails. The MIL will not illuminate. The control module records the operating conditions at the time the diagnostic fails. The control module stores this information in the Failure Records.

2011年2月18日 · There are two categories of DTC’s that apply to OBDII. They are listed below with Type A being the more severe. Emissions related. Requests illumination of the MIL after one failed driving cycle. Stores a freeze frame DTC after one failed driving cycle. Emissions related. Sets a Pending Trouble Code after one failed driving cycle.

DTCs (Diagnostic Trouble Codes) are codes used to identify and diagnose problems in vehicles. They are classified into four main categories, corresponding to different vehicle systems. In this article, we will explain the categories of DTC codes and how to interpret them. II. Category of DTC codes: P for engine.

DTC 故障类型由 16 个不同的故障类别组成，其中每个类别与 16 个子类型故障相关联。 子类型故障按逻辑分组在 DTC 故障类型类别中。 这将简化为 DTC 选择适当的子类型故障。 DTC 故障类别编码在“ DTC Failure Type Byte ”的高半字节中，故障子类型编码在“ DTC Failure Type Byte ”的低半字节中。 如果已经为 组件 /系统定义了标准 DTC，并且该 DTC 描述已经包含 DTC 故障类型信息，则可以使用标准 DTC 编号，并且 DTC 故障类型字节应设置为值 00 hex。 DTC 故障类型 …