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16486/P0102/000258 - Mass Air Flow Sensor (MAF/G70): Signal too Low Possible SymptomsMalfunction Indicator Light (MIL) ON
Loss of Power
Possible CausesWiring and/or Connector(s) from/to Mass Air Flow Sensor (MAF/G70) faulty
Mass Air Flow Sensor (MAF/G70) faulty
Possible SolutionsCheck Wiring and/or Connector(s) from/to Mass Air Flow Sensor (MAF/G70)
Check/Replace Mass Air Flow Sensor (MAF/G70)
Special NotesIn MY 1995-2002 (?) in Europe at VW-diesel-cars G70 had the bad reput*tion of slowly losing his performance, causing loss of power. It's not a matter of defective or breaking down, but it is filthy / dirty (not easy to clean). You can check functionality by making a log in [01-engine], [meas.blocks-08], group 003 (3e gear, full throttle, from 1700-4000rpm)
17963/P1555 - Boost Pressure Control: Upper Limit Exceeded Possible SymptomsReduced power output
Limp mode
Possible CausesBoost Pressure too High
Hoses/Pipes incorrect connected, disconnected, blocked or leaking
Charger Pressure Control defectiveVNT (variable nozzle turbo): nozzles stuck
Solenoid Valve for Boost Pressure Control (N75) defective
Possible SolutionsCheck Hoses/Pipes to/between Components
Check Solenoid Valve for Boost Pressure Control (N75)
Check / Clean / Replace Charge Pressure ControlCheck / Clean mechanism for variable nozzles