Archives: DTC Codes

What Does Code P1843 Mean? DTC P1843 signifies a detected “Open Circuit” within the electrical pathway of the Transmission Transfer Case Differential Lock-Up Feedback Switch. This diagnostic trouble code is specific to vehicles equipped with an electronically controlled transfer case that utilizes a differential lock-up mechanism, typically found in advanced four-wheel drive (4WD) or all-wheel […]

What Does Code P1844 Mean? DTC P1844 signifies a specific electrical fault within the vehicle’s four-wheel-drive (4WD) or all-wheel-drive (AWD) system, indicating a “Transmission Transfer Case Differential Lock-Up Feedback Switch Short Circuit To Battery.” This code is set when the Powertrain Control Module (PCM), or more commonly, the Transfer Case Control Module (TCCM), detects an […]

What Does Code P1845 Mean? DTC P1845 signifies a detected electrical fault within the circuit of the Transmission Transfer Case Differential Lock-Up Feedback Switch, specifically indicating a short circuit to ground. This code is typically set by the Powertrain Control Module (PCM) or, in some vehicle architectures, the Transfer Case Control Module (TCCM). The differential […]

What Does Code P1846 Mean? DTC P1846 signifies a detected electrical circuit failure within the transfer case contact plate ‘A’ circuit. In a four-wheel drive (4WD) or all-wheel drive (AWD) vehicle, the transfer case is responsible for distributing power to the front and rear axles, enabling different drive modes (e.g., 2H, 4H, 4L). The ‘contact […]

What Does Code P1847 Mean? DTC P1847 signifies an “Open Circuit” within the Transmission Transfer Case Contact Plate ‘A’ system. This code specifically indicates that the Powertrain Control Module (PCM) or Transfer Case Control Module (TCCM), depending on the vehicle architecture, is not detecting the expected electrical continuity or signal from the transfer case contact […]

What Does Code P1848 Mean? DTC P1848 signifies a specific electrical fault within the vehicle’s transfer case control system, indicating a “Transmission Transfer Case Contact Plate ‘A’ Short Circuit To Battery”. In the context of a transfer case, a “contact plate” typically refers to an internal component within the transfer case shift motor or its […]

What Does Code P1849 Mean? The diagnostic trouble code P1849 indicates a specific electrical fault within the transfer case control system, specifically identifying a “Short Circuit To Ground” on the circuit associated with “Contact Plate ‘A’”. In modern four-wheel drive (4WD) or all-wheel drive (AWD) systems, the transfer case utilizes an internal mode switch or […]

What Does Code P1850 Mean? DTC P1850 signifies a detected malfunction within the circuit associated with the Transmission Transfer Case Contact Plate ‘B’. In most four-wheel-drive (4WD) or all-wheel-drive (AWD) systems, the transfer case utilizes an internal mode switch (IMS), often referred to as a contact plate or range sensor, to inform the Transfer Case […]

What Does Code P1851 Mean? DTC P1851 signifies an “Open Circuit” condition detected within the Transfer Case Contact Plate ‘B’ circuit. This diagnostic trouble code is specific to the vehicle’s four-wheel-drive (4WD) or all-wheel-drive (AWD) system, monitored by either the Powertrain Control Module (PCM) or a dedicated Transfer Case Control Module (TCCM). The transfer case […]

What Does Code P1852 Mean? DTC P1852 indicates a detected short circuit to battery voltage on the circuit associated with Transfer Case Contact Plate ‘B’. In modern four-wheel drive (4WD) or all-wheel drive (AWD) systems, the transfer case utilizes a shift motor assembly which often incorporates a series of internal contact plates or switches. These […]