Archives: DTC Codes

What Does Code P1740 Mean? The diagnostic trouble code P1740 signifies a “Torque Converter Clutch Inductive Signature Malfunction.” This code is set when the Powertrain Control Module (PCM) or Transmission Control Module (TCM) detects an electrical anomaly within the circuit of the Torque Converter Clutch (TCC) solenoid. The PCM/TCM continuously monitors the electrical characteristics, such […]

What Does Code P1741 Mean? DTC P1741, which stands for Torque Converter Clutch Control Error, signifies that the Powertrain Control Module (PCM) or Transmission Control Module (TCM) has detected an anomaly in the operation or electrical circuit of the Torque Converter Clutch (TCC) system. The TCC is designed to create a direct mechanical link between […]

What Does Code P1742 Mean? DTC P1742 indicates that the Powertrain Control Module (PCM) or Transmission Control Module (TCM) has detected an issue with the Torque Converter Clutch (TCC) solenoid where it appears to be stuck in the “ON” or engaged position when it should be disengaged. The PCM/TCM continuously monitors various parameters, including engine […]

What Does Code P1743 Mean? DTC P1743 indicates that the Powertrain Control Module (PCM) or Transmission Control Module (TCM) has detected an issue with the Torque Converter Clutch (TCC) solenoid circuit, specifically signaling a condition where the TCC solenoid is commanded or detected as being continuously “ON” or engaged, when it should not be. The […]

What Does Code P1744 Mean? DTC P1744 indicates a detected malfunction within the Torque Converter Clutch (TCC) system, specifically a performance issue rather than an outright electrical circuit fault. The Powertrain Control Module (PCM), or Transmission Control Module (TCM) in some applications, monitors the rotational speed differential between the transmission’s input shaft (turbine speed) and […]

What Does Code P1745 Mean? DTC P1745 indicates a detected fault within the Line Pressure Solenoid System. This code is typically set by the Powertrain Control Module (PCM) or Transmission Control Module (TCM) when it identifies an electrical malfunction or performance anomaly with the Line Pressure Control (LPC) solenoid, also often referred to as a […]

What Does Code P1746 Mean? DTC P1746 indicates an Open Circuit in the electrical system for Pressure Control Solenoid “A”. In modern automatic transmissions, the Powertrain Control Module (PCM) or Transmission Control Module (TCM) utilizes various pressure control solenoids (PCS) to precisely regulate hydraulic line pressure, which is critical for smooth gear engagement, shift quality, […]

What Does Code P1747 Mean? DTC P1747 indicates that the Powertrain Control Module (PCM) or Transmission Control Module (TCM), which are often integrated, has detected a short circuit in the electrical circuit for the Pressure Control Solenoid “A”. This solenoid, frequently referred to as the Line Pressure Control (LPC) solenoid, is a crucial component within […]

What Does Code P1748 Mean? The diagnostic trouble code P1748 signifies an Electronic Pressure Control (EPC) Malfunction within the automatic transmission system. The Powertrain Control Module (PCM), or more specifically the Transmission Control Module (TCM) in vehicles with separate units, monitors the electrical circuit and operational performance of the EPC solenoid. The EPC solenoid is […]

What Does Code P1749 Mean? DTC P1749 signifies an electrical malfunction within the Pressure Control Solenoid circuit, specifically indicating a “Failed Low” condition. This code is typically set by the Transmission Control Module (TCM) or Powertrain Control Module (PCM) when it detects that the current draw or resistance of a specific pressure control solenoid (often […]