OBDII Codes P1800 to P1899

• P1800 – Transmission Clutch Interlock Safety Switch Circuit Failure
• P1801 – Transmission Clutch Interlock Safety Switch Open Circuit
• P1802 – Transmission Clutch Interlock Safety Switch Short Circuit To Battery
• P1803 – Transmission Clutch Interlock Safety Switch Short Circuit To Ground
• P1804 – Transmission 4-Wheel Drive High Indicator Circuit Failure
• P1805 – Transmission 4-Wheel Drive High Indicator Open Circuit
• P1806 – Transmission 4-Wheel Drive High Indicator Short Circuit To Battery
• P1807 – Transmission 4-Wheel Drive High Indicator Short Circuit To Ground
• P1808 – Transmission 4-Wheel Drive Low Indicator Circuit Failure
• P1809 – Transmission 4-Wheel Drive Low Indicator Open Circuit
• P1810 – TFP Valve Position Switch Circuit/ Transmission 4-Wheel Drive Low Indicator Short Circuit To Battery
• P1811 – Transmission 4-Wheel Drive Low Indicator Short Circuit To Ground
• P1812 – Transmission 4-Wheel Drive Mode Select Circuit Failure
• P1813 – Transmission 4-Wheel Drive Mode Select Open Circuit
• P1814 – Transmission 4-Wheel Drive Mode Select Short Circuit To Battery
• P1815 – Transmission 4-Wheel Drive Mode Select Short Circuit To Ground
• P1816 – Transmission Neutral Safety Switch Circuit Failure
• P1817 – Transmission Neutral Safety Switch Open Circuit
• P1818 – Transmission Neutral Safety Switch Short Circuit To Battery
• P1819 – Transmission Neutral Safety Switch Short Circuit To Ground
• P1820 – Transmission Transfer Case Clockwise Shift Relay Coil Circuit Failure
• P1821 – Transmission Transfer Case Clockwise Shift Relay Coil Open Circuit
• P1822 – Transmission Transfer Case Clockwise Shift Relay Coil Short Circuit To Battery
• P1823 – Transmission Transfer Case Clockwise Shift Relay Coil Short Circuit To Ground
• P1824 – Transmission 4-Wheel Drive Clutch Relay Circuit Failure
• P1825 – Transmission 4-Wheel Drive Clutch Relay Open Circuit
• P1826 – Transmission 4-Wheel Drive Low Clutch Relay Circuit To Battery
• P1827 – Transmission 4-Wheel Drive Low Clutch Relay Circuit To Ground
• P1828 – Transmission Transfer Case Counter Clockwise Shift Relay Coil Circuit Failure
• P1829 – Transmission Transfer Case Counter Clockwise Shift Relay Coil Open Circuit
• P1830 – Transmission Transfer Case Counter Clockwise Shift Relay Coil Short Circuit To Battery
• P1831 – Transmission Transfer Case Counter Clockwise Shift Relay Coil Short Circuit To Ground
• P1832 – Transmission Transfer Case Differential Lock-Up Solenoid Circuit Failure
• P1833 – Transmission Transfer Case Differential Lock-Up Solenoid Open Circuit
• P1834 – Transmission Transfer Case Differential Lock-Up Solenoid Short Circuit To Battery
• P1835 – Transmission Transfer Case Differential Lock-Up Solenoid Short Circuit To Ground
• P1836 – Transmission Transfer Case Front Shaft Speed Sensor Circuit Failure
• P1837 – Transmission Transfer Case Rear Shaft Speed Sensor Circuit Failure
• P1838 – Transmission Transfer Case Shift Motor Circuit Failure
• P1839 – Transmission Transfer Case Shift Motor Open Circuit
• P1840 – Transmission Transfer Case Shift Motor Short Circuit To Battery
• P1841 – Transmission Transfer Case Shift Motor Short Circuit To Ground
• P1842 – Transmission Transfer Case Differential Lock-Up Feedback Switch Circuit Failure
• P1843 – Transmission Transfer Case Differential Lock-Up Feedback Switch Open Circuit
• P1844 – Transmission Transfer Case Differential Lock-Up Feedback Switch Short Circuit To Battery
• P1845 – Transmission Transfer Case Differential Lock-Up Feedback Switch Short Circuit To Ground
• P1846 – Transmission Transfer Case Contact Plate ‘A’ Circuit Failure
• P1847 – Transmission Transfer Case Contact Plate ‘A’ Open Circuit
• P1848 – Transmission Transfer Case Contact Plate ‘A’ Short Circuit To Battery
• P1849 – Transmission Transfer Case Contact Plate ‘A’ Short Circuit To Ground
• P1850 – Transmission Transfer Case Contact Plate ‘B’ Circuit Failure
• P1851 – Transmission Transfer Case Contact Plate ‘B’ Open Circuit
• P1852 – Transmission Transfer Case Contact Plate ‘B’ Short Circuit To Battery
• P1853 – Transmission Transfer Case Contact Plate ‘B’ Short Circuit To Ground
• P1854 – Transmission Transfer Case Contact Plate ‘C’ Circuit Failure
• P1855 – Transmission Transfer Case Contact Plate ‘C’ Open Circuit
• P1856 – Transmission Transfer Case Contact Plate ‘C’ Short Circuit To Battery
• P1857 – Transmission Transfer Case Contact Plate ‘C’ Short Circuit To Ground
• P1858 – Transmission Transfer Case Contact Plate ‘D’ Circuit Failure
• P1859 – Transmission Transfer Case Contact Plate ‘D’ Open Circuit
• P1860 – TCC PWM Solenoid Circuit Electrical/ Transmission Transfer Case Contact Plate ‘D’ Short Circuit To Battery
• P1861 – Transmission Transfer Case Contact Plate ‘D’ Short Circuit To Ground
• P1862 – Transmission Transfer Case Contact Plate Power Circuit Failure
• P1863 – Transmission Transfer Case Contact Plate Power Open Circuit
• P1864 – Transmission Transfer Case Contact Plate Power Short To Battery
• P1865 – Transmission Transfer Case Contact Plate Power Short To Ground
• P1866 – Transmission Transfer Case System Concern – Servicing Required
• P1867 – Transmission Transfer Case Contact Plate General Circuit Failure
• P1868 – Transmission Automatic 4-Wheel Drive Indicator (Lamp) Circuit Failure
• P1869 – Transmission Automatic 4-Wheel Drive Indicator (Lamp) Circuit Short To Battery
• P1870 – Transmission Component Slipping/ Transmission Mechanical Transfer Case 4×4 Switch Circuit Failure
• P1871 – Transmission Mechanical Transfer Case 4×4 Switch Circuit Short To Battery
• P1872 – Transmission Mechanical 4-Wheel Drive Axle Lock Lamp Circuit Failure
• P1873 – Transmission Mechanical 4-Wheel Drive Axle Lock Lamp Circuit Short To Battery
• P1874 – Transmission Automatic Hall Effect Sensor Power Circuit Failure
• P1875 – Transmission Automatic Hall Effect Sensor Power Circuit Short To Battery / 4WD Low Switch Circuit Electrical
• P1876 – Transmission Transfer Case 2-Wheel Drive Solenoid Circuit Failure
• P1877 – Transmission Transfer Case 2-Wheel Drive Solenoid Circuit Short To Battery
• P1878 – Transmission Transfer Case Disengaged Solenoid Circuit Failure
• P1879 – Transmission Transfer Case Disengaged Solenoid Open Circuit
• P1880 – Transmission Transfer Case Disengaged Solenoid Short to Battery
• P1881 – Engine Coolant Level Switch Circuit Failure, GEM
• P1882 – Engine Coolant Level Switch Circuit Short to Ground
• P1883 – Engine Coolant Level Switch Circuit Failure, GEM
• P1884 – Engine Coolant Level Lamp Circuit Short to Ground
• P1885 – Transmission Transfer Case Disengaged Solenoid Short to Ground
• P1886 – 4X4 Initialization Failure
• P1890 – Transmission 4WD Mode Select Return Input Circuit Failure
• P1891 – Transmission Transfer Case Contact Plate Ground Return Open Circuit

OBDII Codes P1800 to P1899