OBD fault code library

Look up any P or U code to see what it means, what causes it, the parts involved and how it gets fixed.

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Fault codes

P1839 Issue in hydraulic pressure sensor solenoid in gear

Skoda Transmission System High severity

P1841 Communication error between ECM and Transmission Control module

Skoda Computer Output Circuit High severity

P1843 Internal malfunction detected in AWD control module

Skoda Computer Output Circuit High severity

P1844 Internal malfunction detected in Central electronics control module

Skoda Computer Output Circuit High severity

P1845 Internal malfunction detected in Steering control module

Skoda Computer Output Circuit High severity

P1848 Internal malfunction detected in ECM

Skoda Computer Output Circuit High severity

P1849 Internal malfunction detected in Transmission control module

Skoda Computer Output Circuit High severity

P1851 Internal malfunction detected in Brakes control module

Skoda Computer Output Circuit High severity

P1852 Internal malfunction detected in ECM

Skoda Computer Output Circuit High severity

P1854 Internal malfunction detected in ECM

Skoda Computer Output Circuit High severity

P1855 Internal malfunction detected in ECM

Skoda Computer Output Circuit High severity

P1856 Communication error in throttle position sensor

Skoda Computer Output Circuit High severity

P1858 Communication error in engine RPM

Skoda Computer Output Circuit High severity

P1919 Issue in alternator

Skoda Computer Output Circuit High severity

P1859 Issue in brake pressure switch

Skoda Computer Output Circuit High severity