P1557

P1557

Note! Volkwagen does not refer to P1557 for the ALH engine in the Beetle, however on vehicle experience has shown that it is in fact a valid trouble code for this engine.

17965 P1557
Boost pressure regulation control limit exceeded

- Check wastegate bypass regulator valve per "Output Diagnostic Test Mode (DTM)" [1][2]Output Diagnostic Test Mode (DTM)