Hello, i have a skoda octavia 3 from 2015 and a few weeks ago the check engine light turned on, i've checked it witch vcds and i saw the error P2002 Particulate Trap Bank 1 - Efficiency Below Treshold. I cleared it and after few days appeared again. This time I went to a service where they took down the particle filter and sent it to a company that cleans particle filters. After cleaning they installed it and after a few days the check engine light appeared again with the same error and I still get error, even if I clear it again and again.

 

Here is the vcds log:

Quote

Saturday,22,August,2020,15:21:59:00009
VCDS Version: Release 19.6.1 (x64) Running on Windows 10 x64
www.Ross-Tech.com

                Address 01: Engine       Labels: 04L-907-309-V1.clb
Control Module Part Number: 04L 906 021 FD    HW: 04L 907 309 E
  Component and/or Version: R4 1,6L EDC   H22 8122
           Software Coding: 01190012042401094000
            Work Shop Code: WSC 73430 031 00138
              ASAM Dataset: EV_ECM16TDI01104L906021FD 002008 (SK37)
                       ROD: EV_ECM16TDI01104L906021FD.rod
                      VCID: 6CD771B7878BFE2F55-8038
1 Fault Found:

19226 - Particulate Trap Bank 1 
          P2002 00 [237] - Efficiency Below Threshold
          MIL ON - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 149946 km
                    Date: 2020.08.15
                    Time: 15:30:38

                    Engine speed: 2706.50 /min
                    Normed load value: 47.8 %
                    Vehicle speed: 103 km/h
                    Coolant temperature: 60 °C
                    Intake air temperature: 87 °C
                    Ambient air pressure: 1000 mbar
                    Voltage terminal 30: 12.960 V
                    Unlearning counter according OBD: 40
                    Exhaust mass flow of low-pressure EGR: calculated: 23.604
                    Differential pressure ratio: low-pressure EGR: 46.0 kg/h
                    Exh.recircul. 2: differential pres.sensor 1 bank 1: adap. value: 856.1 hPa
                    Exhaust recirculat.2: different.press.sens.1 bank 1: raw value: 1056.0 hPa
                    Exh.recircul.valve 1 bank 1: pos.feedback - Act.value: 0.06 %
                    Exhaust recirc.valve 2 bank 1: posit.feedback - Act.value: 49.21 %

Readiness: 1 1 0 0 0 
 

 

When the particulate filter had been cleaned. Did the garage reset the learning counter to tell the ecu the particulate filter is empty?

Edited 23 August, 20205 yr by Ecomatt

Yes it was reseted

On your freeze frame data it shows " Coolant temperature: 60 °C " which is very low if the engine had been running for a while.

 

Check with VCDS that the engine is getting up to temperature ( 90C ) within 4 or 5 miles of starting from cold.

I will check it, because I had already been with the car enough to heat up until the check engine lit, can it be a reading error? 

But this can be a cause of this particulate trap bank 1 error code? 

The coolant sensor could well be giving a false reading.

 

If the ECU thinks the engine is still quite cool it will run in a different mode which will result in more particulates.

 

Whether it is the cause of your problem I couldn't say, but certainly need addressing.

I will check it, but i still need to find the check engine cause.

I'm thinking it might be the air sensor?