Archives: DTC Codes

What Does Code P1730 Mean? DTC P1730 signifies a detected malfunction within the automatic transmission’s gear control system, specifically affecting the 2nd, 3rd, and 5th gear ratios. This is typically a manufacturer-specific code, commonly observed in Honda/Acura vehicles, indicating that the Transmission Control Module (TCM), or the Powertrain Control Module (PCM) in integrated systems, has […]

What Does Code P1731 Mean? Diagnostic Trouble Code (DTC) P1731 signifies a “1-2 Shift Malfunction” within the automatic transmission system. This code is generated when the Powertrain Control Module (PCM), or in some applications, the dedicated Transmission Control Module (TCM), detects an anomaly during the engagement sequence from first gear to second gear. The control […]

What Does Code P1732 Mean? The diagnostic trouble code P1732 signifies a malfunction detected by the Powertrain Control Module (PCM), or more specifically, the Transmission Control Module (TCM) in vehicles with an automatic transmission, concerning the 2-3 gear shift operation. This code indicates that the TCM has observed an abnormal condition during or immediately after […]

What Does Code P1733 Mean? The OBD-II diagnostic trouble code P1733 signifies a “3-4 Shift Malfunction” within the automatic transmission system. This code is triggered when the Powertrain Control Module (PCM), or Transmission Control Module (TCM) in some applications, detects that the transmission is unable to achieve or maintain the correct gear ratio when attempting […]

What Does Code P1734 Mean? DTC P1734 signifies an Enhanced Powertrain Diagnostic Trouble Code indicating a detected malfunction within the vehicle’s automatic transmission gear control system. While the specific definition can vary slightly between manufacturers, this code is predominantly associated with Honda and Acura vehicles and generally points to an issue with the transmission’s ability […]

What Does Code P1735 Mean? DTC P1735 indicates that the Powertrain Control Module (PCM), or in some architectures, the Transmission Control Module (TCM), has detected an electrical circuit malfunction within the first gear position switch or its associated wiring. This switch is a critical input for the transmission control system, providing feedback on the current […]

What Does Code P1736 Mean? DTC P1736 indicates a malfunction within the electrical circuit of the second gear switch, as detected by the Powertrain Control Module (PCM) or Transmission Control Module (TCM). This code signifies that the control module has identified an electrical anomaly in the signal pathway from the transmission’s second gear pressure switch […]

What Does Code P1737 Mean? The diagnostic trouble code P1737 indicates a malfunction within the Lockup Solenoid System, typically referring to the Torque Converter Clutch (TCC) solenoid circuit or its performance. The Powertrain Control Module (PCM), or in some applications, the Transmission Control Module (TCM), sets this code when it detects an electrical anomaly or […]

What Does Code P1738 Mean? Diagnostic Trouble Code (DTC) P1738 signifies a “Shift Time Error” within the automatic transmission control system. This code is generated by the Powertrain Control Module (PCM), or in some applications, the dedicated Transmission Control Module (TCM), when it detects that the actual time taken for a gear shift to complete […]

What Does Code P1739 Mean? DTC P1739 indicates a malfunction within the Slip Solenoid System of an automatic transmission. This diagnostic trouble code is typically manufacturer-specific, but generally points to an issue with a pressure control solenoid responsible for regulating hydraulic pressure to ensure proper clutch engagement and to manage slip during gear changes or […]