Archives: DTC Codes

What Does Code P1904 Mean? The diagnostic trouble code P1904 indicates that the powertrain control module (PCM), or more specifically the transmission control module (TCM) in integrated systems, has detected an open circuit condition within the electrical circuit of the Pressure Control Solenoid “C.” Pressure Control Solenoids (PCS) are critical electromechanical components within an automatic […]

What Does Code P1905 Mean? DTC P1905 signifies an intermittent short circuit detected in the control circuit of Pressure Control Solenoid “C”. In modern automatic transmissions, Pressure Control Solenoids (PCS), often referred to as Line Pressure Control (LPC) solenoids or Electronic Pressure Control (EPC) solenoids, are crucial electromechanical actuators responsible for regulating hydraulic pressure within […]

What Does Code P1906 Mean? The P1906 diagnostic trouble code signifies that the Powertrain Control Module (PCM) or Transmission Control Module (TCM) has detected an electrical malfunction within the circuit controlling the Kickdown Pull Relay. Specifically, the fault indicates either an open circuit condition, meaning a complete break in continuity preventing current flow, or a […]

What Does Code P1907 Mean? DTC P1907 indicates a fault within the electrical circuit of the Kickdown Hold Relay, specifically detecting an open circuit or a short circuit to ground. The Powertrain Control Module (PCM) or Transmission Control Module (TCM), depending on vehicle architecture, monitors the electrical integrity of this relay’s control and/or load circuit. […]

What Does Code P1908 Mean? DTC P1908 indicates an electrical malfunction within the circuit for a specific transmission pressure control solenoid. The Powertrain Control Module (PCM) or Transmission Control Module (TCM) monitors the electrical parameters of various solenoids responsible for regulating hydraulic pressure within the automatic transmission. These solenoids, often referred to as Variable Force […]

What Does Code P1909 Mean? DTC P1909 indicates a detected malfunction within the circuit for the Transmission Fluid Temperature (TFT) sensor. The Powertrain Control Module (PCM), or Engine Control Module (ECM) in some architectures, monitors the voltage signal from the TFT sensor to determine the operating temperature of the transmission fluid. The TFT sensor is […]

What Does Code P1910 Mean? DTC P1910 is a manufacturer-specific diagnostic trouble code indicating a malfunction within the Variable Force Solenoid ‘A’ (VFS ‘A’) circuit or its hydraulic output. In most automotive applications, VFS ‘A’ refers to a specific solenoid within an automatic transmission responsible for modulating hydraulic pressure. This solenoid might control critical functions […]

What Does Code P1911 Mean? DTC P1911, which translates to “VFS B Pressure Output Failed Low,” indicates a fault within the automatic transmission’s hydraulic control system, specifically related to Variable Force Solenoid ‘B’ (VFS B). A Variable Force Solenoid is a precision electro-hydraulic actuator responsible for modulating hydraulic pressure within the transmission to control specific […]

What Does Code P1912 Mean? DTC P1912 signifies that the Powertrain Control Module (PCM) or Transmission Control Module (TCM) has detected an abnormally low pressure output from the Variable Force Solenoid ‘C’ (VFS ‘C’) circuit within the automatic transmission. Variable Force Solenoids, also known as Line Pressure Control Solenoids or Shift Solenoids, are electro-hydraulic actuators […]

What Does Code P1913 Mean? DTC P1913, “Pressure Switch A Circuit Malfunction,” indicates that the Powertrain Control Module (PCM) or Engine Control Module (ECM) has detected an electrical fault within the circuit of a specific pressure switch, designated as “A.” Since P19XX codes are generally manufacturer-specific (falling outside the standard SAE J2012 definitions), the exact […]