Archives: DTC Codes

What Does Code P1418 Mean? The diagnostic trouble code (DTC) P1418 indicates a “Split Air #1 Circuit Malfunction.” This code is set by the Engine Control Module (ECM), also commonly referred to as the Powertrain Control Module (PCM), when it detects an electrical anomaly within the circuit responsible for controlling or monitoring a component of […]

What Does Code P1419 Mean? DTC P1419 signifies an electrical circuit malfunction within the Secondary Air Injection (SAI) system, specifically impacting a component or circuit designated as “Split Air #2.” The Engine Control Module (ECM) or Powertrain Control Module (PCM) is designed to monitor the operational integrity of various emission control components. In the case […]

What Does Code P1420 Mean? The diagnostic trouble code P1420 signifies an electrical fault within the circuit of the Catalyst Temperature Sensor. This sensor is an integral component of the exhaust aftertreatment system, primarily responsible for monitoring the operational temperature of the catalytic converter. Its main purpose is to provide feedback to the Engine Control […]

What Does Code P1421 Mean? DTC P1421 typically indicates a detected condition leading to or signifying “Catalyst Damage” or “Catalyst Heating Malfunction” for a specific catalyst, often Bank 1. This is a manufacturer-specific code, commonly encountered in Mercedes-Benz vehicles, and is often related to the secondary air injection system’s role in rapid catalyst light-off or […]

What Does Code P1422 Mean? DTC P1422 signifies a detected malfunction within a circuit associated with an EGI Temperature Sensor. While the term “EGI” (Electronic Gasoline Injection) can be broad, in the context of a P14xx series code, this specific temperature sensor is most commonly associated with the Secondary Air Injection (SAI) System or an […]

What Does Code P1423 Mean? DTC P1423, which translates to “EGI Functionality Test Failed,” specifically indicates that the Engine Control Module (ECM), also commonly referred to as the Powertrain Control Module (PCM), has detected an anomaly during its self-diagnostic test of the Electronic Gasoline Injection (EGI) system’s functionality. While “EGI” might broadly imply fuel injection, […]

What Does Code P1424 Mean? Code P1424 indicates that the Engine Control Module (ECM), often referred to as the Powertrain Control Module (PCM), has detected an electrical fault within the “EGI Glow Plug Primary” circuit. In the context of diesel engines, EGI typically refers to the electronic control or management aspect of the glow plug […]

What Does Code P1425 Mean? DTC P1425 indicates an EGI Glow Plug Secondary Failure, meaning the Engine Control Module (ECM), also known as the Powertrain Control Module (PCM), has detected an anomaly in the secondary monitoring or feedback circuit associated with the Electronic Glow Plug Ignition (EGI) system. In modern diesel engines, the EGI system […]

What Does Code P1426 Mean? DTC P1426 signifies that the Engine Control Module (ECM), also known as the Powertrain Control Module (PCM), has detected a Mass Air Flow (MAF) sensor signal that is outside of its expected operating range. The “EGI Mini” prefix often refers to a specific Electronic Gasoline Injection system, typically found in […]

What Does Code P1427 Mean? Diagnostic Trouble Code (DTC) P1427, specifically identified for “EGI Mini” applications, signifies a detected malfunction in the Mass Air Flow (MAF) sensor circuit, specifically a “Failed Short Circuit”. The Engine Control Module (ECM), also referred to as the Powertrain Control Module (PCM), monitors the MAF sensor’s output voltage signal. The […]