OBD2 trouble code reference
8,155 codes across 1 prefix groups on this page.
U1xxx
- U1820 U1820: Audio System Communication Failure network
- U1821 U1821: "Network Communication Line Fault network
- U1822 Communication Line Fault in Vehicle Network network
- U1823 U1823: "Module Communication Failure network
- U1824 U1824: "Module Communication Failure network
- U1825 U1825: "Module Communication Failure network
- U1826 U1826: "Module Communication Failure network
- U1827 U1827: "Module Communication Failure network
- U1828 U1828: "Network Communication Line Fault network
- U1829 U1829: Audio System Communication Fault network
- U1830 U1830: "Module Communication Failure network
- U1831 U1831: "Module Communication Failure network
- U1832 U1832: "Control Module Communication Failure network
- U1833 U1833: "Control Module Communication Failure network
- U1834 U1834: "Control Module Communication Failure network
- U1835 U1835: "Control Module Communication Failure network
- U1837 Control Module Communication Fault network
- U1838 U1838: "Module Communication Failure network
- U1839 Module Communication Fault network
- U1840 U1840: "Module Communication Failure network
- U1841 U1841: Instrument Cluster Communication Fault network
- U1842 U1842: "Module Communication Failure network
- U1843 U1843: Instrument Cluster Communication Failure network
- U1844 U1844: Instrument Cluster Communication Failure network
- U1845 U1845: Instrument Cluster Communication Failure network
- U1846 U1846: "BCM Communication Failure network
- U1847 U1847: Instrument Cluster Communication Failure network
- U1848 U1848: Body Control Module Communication Fault network
- U1849 U1849: Instrument Cluster Communication Failure network
- U1850 U1850: "Module Communication Failure network
- U1851 Lost Communication with the Instrument Panel Cluster (IPC) Control Module network
- U1852 Lost Communication with Body Control Module (BCM) - Bus Off network
- U1853 U1853: "Module Communication Failure network
- U1854 U1854: "Module Communication Failure network
- U1855 Lost Communication with Body Control Module (BCM)" network
- U1856 U1856: "Module Communication Failure network
- U1857 U1857: "Module Communication Failure network
- U1858 Module Communication Failure network
- U1859 U1859: "Module Communication Failure network
- U1860 Communication Line Fault Detected network
- U1861 U1861: "Module Communication Line Fault network
- U1862 U1862: "Network Communication Line Fault network
- U1863 U1863: "Inter-Module Communication Failure network
- U1864 CAN Bus Communication Failure network
- U1865 U1865: "Module Communication Failure network
- U1866 U1866: "Inter-Module Communication Failure network
- U1867 Instrument Cluster CAN Bus Communication Error network
- U1868 U1868: "Module Communication Fault network
- U1869 U1869: "Module Communication Line Fault network
- U1870 refers to a communication issue between the transmission control module (TCM) and other control modules in the vehicle network