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rafisoltys
5th January, 2019, 12:34 AM
Hi,

I have problem with DPF off in Mercedes W169 A180CDI (109PS) from 2005 y.
I read EDC16C31 ecu without problem by KESS but when i switch DPF OFF by Swiftec i have new DTC and CHECK ENGINE.

Before read ecu i checked it by WoW and got this DTC:

from EOBD: P2002 - The efficiency of the particulate filter below the threshold value
from 640.940: 2251 Monitoring the air flow through the particle filter - air mass too low (this dtc was without P prefix).

After writting file with DPF OFF i got this:

from EOBD: P1402 - WoW didnt recognize it
from 640.940: 2251 Differential pressure sensor - error of reliability of indications (this dtc was without P prefix).



After dpf off mode car stays in LIMP MODE (i suppose by P1402).
Before, any problem with LIMP MODE (car had good power, only smokes).

Removing dtc (P1402) from dtc table unfortunately does not help

Do you have some experience with this car and have confirmed solution ?

Mario3
5th January, 2019, 01:01 AM
Hi

yes, swiftec does not work on difficult ecus very well

Only a proper manual solution will solve your problem, winols & damos :)

or just pay somebody who knows what he is doing :)

voltechcar
5th January, 2019, 08:26 AM
I edit many times this ecu without any problems, if have autoamtic gearbox must read full flash (2 dtc table) if you need cut dtc

rafisoltys
5th January, 2019, 09:58 AM
You may have right becouse this car has CVT gerbox.

In this case to proper DPF off i need read it on bench by KTAG ?

Is it possible to correct switch DPF off by OBD ?

rafisoltys
5th January, 2019, 10:00 AM
I get some information, in this car the difference pressure sensor must be working good, and that is reason why car is LIMP MODE (in this car was problem with difference pressure sensor ??? ). And only replace DPS on new one should solve this problem.

That is true ??

voltechcar
5th January, 2019, 10:05 AM
bad information. On my solution all sensor from dpf is off