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
P1746
Internal malfunction detected in Transmission control module
Volkswagen
Transmission System
High severity
P1748
Internal malfunction detected in Transmission control module
Volkswagen
Transmission System
High severity
P1749
Internal malfunction detected in Transmission control module
Volkswagen
Transmission System
High severity
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