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Title: P0234 - 35-00 - Limit Exceeded (Overboost Condition) - what is the source? Post by: nyet on January 04, 2015, 11:07:59 PM 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? Title: Re: DTC to DFPM: 16618 - Boost Pressure Regulation - where is this DTC generated? Post by: nyet on January 04, 2015, 11:51:03 PM going from this
http://nefariousmotorsports.com/forum/index.php?topic=567.0 in the 1.8T LP file, I believe the DTC table starts at 132DC 0234 appears at 1359c and 135b4 DTC at 107B8 and 107BB 107B8 is CLALDO, 107BB is CLALDR LDO is disabled, which leaves LDR Title: Re: DTC to DFPM: 16618 - Boost Pressure Regulation - where is this DTC generated? Post by: ddillenger on January 05, 2015, 12:08:03 AM 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) Title: Re: DTC to DFPM: 16618 - Boost Pressure Regulation - where is this DTC generated? Post by: nyet on January 05, 2015, 12:45:31 AM So as suspected, this is an UNDERBOOST related code in this file, which is generated when the LDR PID i-max trim maxes out due to underboost...
In the LP file, CLALDO is disabled, so it can never generate P0234, only CLALDR can generate P0234 Title: Re: DTC to DFPM: 16618 - Boost Pressure Regulation - where is this DTC generated? Post by: nyet on January 05, 2015, 12:38:48 PM 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 Title: Re: P0234 - 35-00 - Limit Exceeded (Overboost Condition) - what is the source? Post by: terminator on January 07, 2015, 04:28:22 AM The same thing with positive and negative deviation. For 2.7t negative is an overboost, for 1.8t negative is an underboost. I believe its VCDS mistake.
Title: Re: P0234 - 35-00 - Limit Exceeded (Overboost Condition) - what is the source? Post by: nyet on January 07, 2015, 10:23:35 AM The same thing with positive and negative deviation. For 2.7t negative is an overboost, for 1.8t negative is an underboost. I believe its VCDS mistake. 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 |