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P1548 Diagnostic Trouble Code Discussion for February 2005

Engine Air Filter Restriction

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Trouble Ticket Help Requests for DTC P1548
Help Request Posted
1999 Volkswagen Passat GLS 1.8L code in ECU VIN: WVWNA63B2X
P1548: Boost pressure control valve - VAG code17956. ... the ECU that does not cause the MIL to come on. I tried to clear it but it comes right back. The car has no divability problems whatsoever. I checked basics (vacuum lines, Blow off valve, waste gate). The code 017956 (P1548) is for the Boost pressure contr...
February 02, 2005