http://nefariousmotorsports.com/forum/index.php?topic=6773.0title=

In this case, this is on an LP 1.8t

16618 - Boost Pressure Regulation
            P0234 - 35-00 - Limit Exceeded (Overboost Condition)


Is that from DLDR LDO, LDRA, or DLKVDK?

And is it a max_Error (LDO, DLKVDK) or a min_Error (LDRA, DLKVDK)?

More importantly, how the HELL do I correlate DTC ids with DFPM sources?

DTC table start 132DC
P0234 DTC 1359C
Error class table start 10760 (CLAAAA)

1359C-132DC=2C0

2C0/8=58

10760+58=107B8

107B8=Fehlerklasse: LDR Überladefehler (CLALDO)

http://wiki.ross-tech.com/wiki/index.php/16618/P0234/000564

16618/P0234/000564 - Boost Pressure Regulation: Limit Exceeded (Overboost Condition)
Possible Symptoms

    Malfunction Indicator Light (MIL) ON
    Boost Pressure too high [I believe this is wrong for the LP bin!]
    Reduced Power Output

Possible Causes

    Hoses incorrectly connected, disconnected, blocked or leaking
    Boost Pressure Control Valve (N75) faulty
    Boost Pressure Sensor (G31) faulty
    Turbo Charger stuck/faulty

Possible Solutions

    Check Charge Pressure Control System
        Perform Output Test (to check the Turbo Charger)
        Perform Basic Setting (to check the Charge Pressure Control)
        Perform Pressure Test to locate Leaks
    Check/Replace Boost Pressure Control Valve (N75)
    Check/Replace Boost Pressure Sensor (G31)
    Check/Replace Turbo Charger

I emailed Uwe and he seems to agree that VCDS can't tell (and can't know) the difference.... I suggested that they should remove the overboost/underboost too high/low message entirely for P1556/P1557/P0234