Help Please Advice needed (Egr Valve)

[The Jargen]

Hi guys I scanned my car this morning an received these two fault codes, now the exhaust gas temperature is self explanatory, but regarding the egr, is it worth messing around cleaning the intakes, throttle body etc, or just get it mapped out? I haven't lost any performance from the car just yet. Also is the egr a prerequisite for DPF regeneration?

Thanks.

Spoiler

Address 01: Engine (J623-CAPA)       Labels: 059-907-401-V1.clb
   Part No SW: 8K0 907 401     HW: 8K0 907 401 
   Component: 3.0TDI EDC17  H01 0009 
   Revision: --H01---   
   Coding: 01140023180F0118
   Shop #: WSC 06325 000 00000
   ASAM Dataset: EV_ECM30LTDIA5 A01010
   ROD: EV_ECM30LTDIA5_A01.rod
   VCID: 68D863E293E89B0141-803C
2 Faults Found:
4807 - EGR System 
          P0401 00 [096] - Insufficient Flow
          Intermittent - Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 2
                    Mileage: 270818 km
                    Date: 2018.08.03
                    Time: 21:47:02
                    Engine speed: 2034.50 /min
                    Normed load value: 51.0 %
                    Vehicle speed: 123 km/h
                    Coolant temperature: 98 °C
                    Intake air temperature: 30 °C
                    Ambient air pressure: 1430 mbar
                    Voltage terminal 30: 13.920 V
                    Unlearning counter according OBD: 5
                    Engine speed: 2011.0 /min
                    Vehicle speed: 122.23 km/h
                    Charge adjuster output stage: 0.00 %
                    EGR valve output stage: -19.03 %
                    Throttle valve output stage: 12.48 %
                    AFS dm: 199.4 kg/h
                    Inj Ctl q Curr: 18.04 mg/stroke
4956 - Exhaust Gas Temp Bank 1 Sensor 1 (G235) 
          P2080 00 [237] - Implausible Signal
          MIL ON - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 270387 km
                    Date: 2018.07.31
                    Time: 18:01:28
                    Engine speed: 664.00 /min
                    Normed load value: 86.7 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 27 °C
                    Intake air temperature: 25 °C
                    Ambient air pressure: 980 mbar
                    Voltage terminal 30: 11.040 V
                    Unlearning counter according OBD: 40
                    Engine speed: 664.0 /min
                    Vehicle speed: 0.00 km/h
                    Field regeneration status-Bit 0: 00000000 
                    Field regeneration status-Bit 16: 00010000 
                    Field regeneration status-Bit 24: 10000000 
                    Field regeneration status-Bit 8: 00000000 
                    Intake air temperature: 25.2 °C
                    Coolant temperature: 27.4 °C
                    AS Mod dm EG mp: 41.7 kg/h
                    Exh t Oxi Cat Ds: -273.1 °C
Readiness: 1 1 0 0 0

 

[MarkWizard]

DPF doesn't need the EGR but helps it if you don't do long and regular journeys apparently

 

[The Jargen]

My journey to work is a lot shorter now, I ran a duty cycle on the EGR and it was fine, but if push comes to shove I'll delete it, I was worried if I deleted it the DPF wouldn't function properly.

Thanks for clarifying it.

 

[Gazwould]

I was under the impression egr was a prerequisite of dpf regeneration regulating both temperature and pressure ?

 

[The Jargen]

Which answer is correct then?

 

[MarkWizard]

Which answer is correct then?

When I got my A6 remapped the guy from Quantum asked if I wanted the EGR disabling. He said that as I did a lot of long journeys it wouldn't have a negative impact on the DPF

 

[The Jargen]

When I got my A6 remapped the guy from Quantum asked if I wanted the EGR disabling. He said that as I did a lot of long journeys it wouldn't have a negative impact on the DPF

So it does aide regeneration in someway then?

Looks like if I run into an EGR fault it'll be better to delete the DPF and swirl flaps as well.

 

[MarkWizard]

So it does aide regeneration in someway then?

Looks like if I run into an EGR fault it'll be better to delete the DPF and swirl flaps as well.

Yes does aide it but doesn't rely on it. Presume you've got a V6 TDi?

 

[The Jargen]

Yes does aide it but doesn't rely on it. Presume you've got a V6 TDi?

Yeah, I've got a 3.0 TDI.

 

[Chris90]

I just had the EGR mapped out on my 2.0 175. Its a requirement for the DPF.

 

[Seanchadwick2k3]

I chose not to get rid of the egr in this car, done it on my last TDI and I had a short commute to work. The engine warm up times suffered quite a bit so I used more fuel. Guage barely moved by the time I got to work

 

[MarkWizard]

I just had the EGR mapped out on my 2.0 175. Its a requirement for the DPF.

As far as I'm aware it's not a requirement but removal of the EGR slows down engine warm up and on short journeys can cause DPF to become blocked