GL350 Help - DPF/O2 Low boost
I'm trying to get my car back on the road. Started with Oil leaks and burning from wrong oils and then a clogged DPF.
Adressed the leaks and now
DPF was taken out and baked and put back. The 2nd SCR with the o2 sensor bung broke and was welded back on.
I still have low boost and errors with the o2 after using Exentry to re-adapt them to the car.
DPF Fill level says 0 so it wont do a standing regen.
Any ideas where I should start
Attached is a Screenshot of xentry.
Thanks for all the input
Did you replace oxygen sensor?
Don't think that should require any kind of adaptation after replacement, the one on mine didn't/doesn't.
What are the current codes if any, and is CEL on dashboard lit?
All the codes in your screenshot are Stored, meaning historical rather than currently active.
Is the DEF tank full? If not fill it up to be sure, the stuff is cheep.
How does it Drive now?
If it has low power and the RPM goes higher than normal before shifting, and struggles to accelerate or hold speed going up hills you may have a boost problem.
A bad boost problem will have you blowing black clouds out the back, but marginal one might not throw any codes.
If there's no current codes but limping / low power check for leaks in the hoses and connections going to intercooler. They would be making greasy areas in front of the motor.
One last thought about O2 sensors, they can set your CEL for a few days then you take a trip or just long way home. Next morning CEL is out.
Emission-related codes will clear themselves after the issue is fixed and car does a couple/three drive cycles. This is by design and you don't need a scanner to 'clear' codes.
Fixing the underlying issues is what clears codes ( at least, marks them Stored after being Active/Current ).




What parts will AEM replace on your vehicle?
My E250 got new exhaust where emission systems are,
Did you replace oxygen sensor?
Don't think that should require any kind of adaptation after replacement, the one on mine didn't/doesn't.
So when the DPF was taken out the parts after it that hold the secondary ( I think ) has a sensor that somehow broke at the bung. Mechanic welded the bung back but If im not mistaken that is the sensor giving code?
What are the current codes if any, and is CEL on dashboard lit?
Im a total noob when it comes to xentery. What happened is I picked up the car after DPF cleaning with a CEL allready came home cleared the codes in Xentry ( or so I thought because CEL went off ) drove it trying to see if it would regen by istself. Car drives as if it has no power as I would assume it would like it has no boost cant make it up a hill and shifts down and hard revs to go anywhere. No black soot out of the exhaust and you can smell the DEF ( if that's a thing )
All the codes in your screenshot are Stored, meaning historical rather than currently active.
Is the DEF tank full? If not fill it up to be sure, the stuff is cheep.
Adblue light is not on but somhow checked level dont know what it was in xentry, adding a box now.
How does it Drive now?
If it has low power and the RPM goes higher than normal before shifting, and struggles to accelerate or hold speed going up hills you may have a boost problem.
A bad boost problem will have you blowing black clouds out the back, but marginal one might not throw any codes.
If there's no current codes but limping / low power check for leaks in the hoses and connections going to intercooler. They would be making greasy areas in front of the motor.
Great idea I'll check of the hoses are loose I know i feel oil near the intercooler line that has the dampener on it the fat part as for driving its exactly as you mentioned
One last thought about O2 sensors, they can set your CEL for a few days then you take a trip or just long way home. Next morning CEL is out.
Emission-related codes will clear themselves after the issue is fixed and car does a couple/three drive cycles. This is by design and you don't need a scanner to 'clear' codes.
Fixing the underlying issues is what clears codes ( at least, marks them Stored after being Active/Current ).
Really appreciate the hellp! been given the run around by so many mechanics wish my AEM Would come sooner as dpf and issues would hopefully be sorted by that.
The crazy thing was one day randomly I was making 10psi of boost and bam one drive later nada. Took a screenshot of it with the Torque app. Could it be a turbo actuator? did I damage that from having a blocked dpf
Thanks
============14==============
P16DA(00)
Raw code: 16DA00
ECU: Engine control unit[Archive (inactive)]
Status: Pending, Confirmed, Test failed since last DTC clear, Test not completed during this operation cycle
============15==============
P14AC(00)
Raw code: 14AC00
ECU: Engine control unit[Archive (inactive)]
Status: Confirmed, Test failed since last DTC clear
============16==============
P14F1(00)
Raw code: 14F100
ECU: Engine control unit[Archive (inactive)]
Status: Pending, Confirmed, Test failed since last DTC clear, Test not completed during this operation cycle, Warning indicator requested
============17==============
P15FD(00)
Raw code: 15FD00
ECU: Engine control unit
Status: Test failed, Test failed (current drive cycle), Pending, Confirmed, Test failed since last DTC clear, Warning indicator requested
============18==============
P16E1(00)
Raw code: 16E100
ECU: Engine control unit
Status: Test failed, Test failed (current drive cycle), Pending, Confirmed, Test failed since last DTC clear, Warning indicator requested
============19==============
P14F1(00)
Raw code: 14F100
ECU: Engine control unit
Status: Pending, Test failed since last DTC clear
============20==============
P14AC(00)
Raw code: 14AC00
ECU: Engine control unit
Status: Test failed, Test failed (current drive cycle), Pending, Confirmed, Test failed since last DTC clear
============21==============
P14AB(00)
Raw code: 14AB00
ECU: Engine control unit
Status: Test failed, Test failed (current drive cycle), Pending, Confirmed, Test failed since last DTC clear, Warning indicator requested
============22==============
P16DA(00)
Raw code: 16DA00
ECU: Engine control unit
Status: Pending, Confirmed, Test failed since last DTC clear
============23==============
P1239(00)
Raw code: 123900
ECU: Engine control unit
Status: Test failed, Test failed (current drive cycle), Pending, Confirmed, Test failed since last DTC clear
OBDII: Speed Fuel Pump Positive Feed Fault
============24==============
P0299
Raw code: 0299
ECU: Engine control unit[Archive (inactive)]
Status: Permanent
OBDII: Turbocharger (TC)/supercharger (SC) - low boost
============25==============
P244A
Raw code: 244A
ECU: Engine control unit[Archive (inactive)]
Status: Permanent
OBDII: Diesel particulate filter (DPF) - differential pressure too low
============26==============
P2458
Raw code: 2458
ECU: Engine control unit[Archive (inactive)]
Status: Permanent
OBDII: Diesel particulate filter (DPF), regeneration process - duration malfunction
============27==============
P2459
Raw code: 2459
ECU: Engine control unit[Archive (inactive)]
Status: Permanent
OBDII: Diesel particulate filter (DPF), regeneration process - number of DPF regeneration cycles too high
============28==============
P2195
Raw code: 2195
ECU: Engine control unit
Status: Pending
OBDII: Heated oxygen sensor (HO2S) 1, bank 1 - signal stuck lean
============29==============
P0299
Raw code: 0299
ECU: Engine control unit
Status: Pending
OBDII: Turbocharger (TC)/supercharger (SC) - low boost
============30==============
P244A
Raw code: 244A
ECU: Engine control unit
Status: Pending
OBDII: Diesel particulate filter (DPF) - differential pressure too low
============31==============
P2080
Raw code: 2080
ECU: Engine control unit
Status: Pending
OBDII: Exhaust gas temperature (EGT) sensor 1, bank 1 - range/performance problem
Mercedes-Benz: Exhaust Gas Temperature Sensor Circuit Range/Performance (Bank 1 Sensor 1)
============32==============
P0299
Raw code: 0299
ECU: Engine control unit
Status: Confirmed
OBDII: Turbocharger (TC)/supercharger (SC) - low boost
============33==============
P244A
Raw code: 244A
ECU: Engine control unit
Status: Confirmed
OBDII: Diesel particulate filter (DPF) - differential pressure too low
============34==============
P2080
Raw code: 2080
ECU: Engine control unit
Status: Confirmed
OBDII: Exhaust gas temperature (EGT) sensor 1, bank 1 - range/performance problem
Mercedes-Benz: Exhaust Gas Temperature Sensor Circuit Range/Performance (Bank 1 Sensor 1)



