Archives: DTC Codes

What Does Code P1853 Mean? DTC P1853 indicates a detected Short Circuit to Ground within the circuit associated with the Transfer Case Contact Plate ‘B’. The Powertrain Control Module (PCM) or Transfer Case Control Module (TCCM), depending on the vehicle architecture, monitors the electrical integrity and operational state of the transfer case’s internal components. The […]

What Does Code P1854 Mean? The OBD-II diagnostic trouble code P1854 indicates a detected electrical malfunction within the Transmission Transfer Case Contact Plate ‘C’ Circuit. This code is typically set when the Powertrain Control Module (PCM), or a dedicated Transfer Case Control Module (TCCM) if present, identifies an electrical anomaly within this specific circuit. The […]

What Does Code P1855 Mean? The diagnostic trouble code P1855 signifies an “Transmission Transfer Case Contact Plate ‘C’ Open Circuit.” This code is manufacturer-specific, generally indicating an electrical fault within the transfer case’s internal range or mode selection sensing mechanism. The transfer case, a crucial component in 4WD and AWD vehicles, is responsible for distributing […]

What Does Code P1856 Mean? DTC P1856 indicates a fault within the transfer case control system, specifically reporting a “Short Circuit To Battery” on the circuit associated with Contact Plate ‘C’ of the transmission transfer case. In modern four-wheel-drive (4WD) or all-wheel-drive (AWD) systems, the transfer case utilizes internal contact plates or a range sensor […]

What Does Code P1857 Mean? DTC P1857 signifies a detected electrical fault within the transmission transfer case system, specifically indicating a short circuit to ground associated with “Contact Plate ‘C’”. In most four-wheel-drive (4WD) or all-wheel-drive (AWD) vehicles, the transfer case is responsible for distributing engine power to both the front and rear axles. Within […]

What Does Code P1858 Mean? DTC P1858 signifies a detected electrical circuit failure within the transfer case contact plate ‘D’ circuit. In a four-wheel-drive (4WD) or all-wheel-drive (AWD) vehicle, the transfer case is responsible for distributing power from the transmission to both the front and rear axles, enabling different drive modes (e.g., 2WD, 4HI, 4LO, […]

What Does Code P1859 Mean? DTC P1859 indicates an Open Circuit in the Transmission Transfer Case Contact Plate ‘D’ circuit. This code is typically set by the Powertrain Control Module (PCM) or the Transfer Case Control Module (TCCM) when it detects a loss of electrical continuity on a specific circuit related to the transfer case’s […]

What Does Code P1860 Mean? The diagnostic trouble code P1860 primarily indicates an electrical fault within the Torque Converter Clutch (TCC) Pulse Width Modulation (PWM) solenoid circuit. The Powertrain Control Module (PCM), which may also be referred to as the Engine Control Module (ECM) or Transmission Control Module (TCM) depending on the vehicle’s architecture, actively […]

What Does Code P1861 Mean? DTC P1861 signifies a “Transmission Transfer Case Contact Plate ‘D’ Short Circuit To Ground”. This code is typically encountered in vehicles equipped with an electronically controlled transfer case, often associated with General Motors platforms utilizing the NP1, NP2, or NP8 series transfer cases (e.g., NVG 236, NVG 246). The transfer […]

What Does Code P1862 Mean? DTC P1862 signifies a detected malfunction within the power supply circuit to the transfer case contact plate. The Engine Control Module (ECM) or, more commonly, the Transfer Case Control Module (TCCM) monitors the electrical integrity of various circuits associated with the transfer case’s operational components. The transfer case contact plate […]