My wife has just got back her Yeti 110 diesel front wheel drive car back from our local dealer after two new front tyres and a front end suspension drop link and the yellow glow plug icon came up on the dash and the engine went into default slow speed on the way home. Checked all the connections out when she got home and after 9 years of heavy use. Cleared down the fault and after some 25 miles it reappeared and went back into it's default speed again. I had driven it down a dual carriageway for quite a few miles and it went away thinking all was well but then she went off to work and back again came the fault. Have included the log from a VCDS reading for any help? is it the dreaded EGR valve again?

 

 

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Saturday,29,February,2020,17:17:00:38822 
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x86
VCDS Version: 19.6.2.0  HEX-V2 CB: 0.4508.4
Data version: 20190930 DS308.0
www.Ross-Tech.com

VIN: TMBKC75L   License Plate: 
Mileage: 210730km-130941mi   Repair Order: 

 

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Chassis Type: 5L-SK35 (7N0)
Scan: 01 03 08 09 10 15 16 17 19 25 42 44 46 52 56 62 72

VIN: TMBKC75L6B6060019   Mileage: 210730km-130941miles

01-Engine -- Status: Malfunction 0010
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: Malfunction 0010
10-Park/Steer Assist -- Status: OK 0000
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: Malfunction 0010
19-CAN Gateway -- Status: Malfunction 0010
25-Immobilizer -- Status: OK 0000
42-Door Elect, Driver -- Status: Malfunction 0010
44-Steering Assist -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
52-Door Elect, Pass. -- Status: Malfunction 0010
56-Radio -- Status: OK 0000
62-Door, Rear Left -- Status: Malfunction 0010
72-Door, Rear Right -- Status: Malfunction 0010
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Address 01: Engine (J623-CFHA)       Labels:. 03L-906-018-CFF.clb
   Part No SW: 03L 906 018 BP    HW: 03L 906 018 BR
   Component: R4 2,0L EDC   H23 6746  
   Revision: 42H23---    Serial number:               
   Coding: 00110012042500080000
   Shop #: WSC 33361 790 00999
   ASAM Dataset: EV_ECM20TDI01103L906018BP 003005
   ROD: EV_ECM20TDI01103L906018BP_003.rod
   VCID: 79AE1F24695028AF8E9-802C

2 Faults Found:
4891 - EGR Valve (N18) 
          P0403 00 [104] - Malfunction
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 3
                    Mileage: 210699 km
                    Date: 2020.02.29
                    Time: 14:24:22

                    Engine speed: 1770.50 /min
                    Normed load value: 42.7 %
                    Vehicle speed: 89 km/h
                    Coolant temperature: 74 °C
                    Intake air temperature: 12 °C
                    Ambient air pressure: 970 mbar
                    Voltage terminal 30: 14.520 V
                    Unlearning counter according OBD: 40
                    Air mass: actual value (mg/stroke): 441.4 mg/stroke
                    EGR Vacuum Regulator Solen.val.: activation: 100.00 %
                    EGR Solen.val.: actual value: 85.07 %
                    EGR valve: offset closed: 2.14 %
                    Actuator for high pressure EGR: status-Bits 0-7: 0
                    Actuator for high pressure EGR: status-Bits 0-7: 16
                    Actuator for high pressure EGR: status-Bits 0-7: 55
                    Actuator for high pressure EGR: status-Bits 0-7: 7
                    High press EGR actuator: actual unconditioned volt val: 1383.8 mV

4892 - EGR Valve (N18) 
          P0403 00 [104] - Malfunction
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 3
                    Mileage: 210699 km
                    Date: 2020.02.29
                    Time: 14:24:21

                    Engine speed: 1770.00 /min
                    Normed load value: 29.0 %
                    Vehicle speed: 89 km/h
                    Coolant temperature: 74 °C
                    Intake air temperature: 12 °C
                    Ambient air pressure: 970 mbar
                    Voltage terminal 30: 14.560 V
                    Unlearning counter according OBD: 40
                    Air mass: actual value (mg/stroke): 343.2 mg/stroke
                    EGR Vacuum Regulator Solen.val.: activation: 15.00 %
                    EGR Solen.val.: actual value: 43.41 %
                    EGR valve: offset closed: 2.14 %
                    Actuator for high pressure EGR: status-Bits 0-7: 0
                    Actuator for high pressure EGR: status-Bits 0-7: 0
                    Actuator for high pressure EGR: status-Bits 0-7: 55
                    Actuator for high pressure EGR: status-Bits 0-7: 7
                    High press EGR actuator: actual unconditioned volt val: 2634.0 mV

Readiness: 0 2 0 0 0 

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Address 03: ABS Brakes        Labels:. 1K0-907-379-MK70M.clb
   Part No SW: 1K0 907 379 AK    HW: 1K0 907 379 AK
   Component: MK70 M MASR         0106  
   Revision: 00H35001    
   Coding: 0017665
   Shop #: WSC 33361 790 00999
   VCID: 7BA2052C6FEC1ABF9C5-802E

No fault code found.
 

As the diagnostic scan says - there's a problem with the EGR valve.

 

It's worth getting it cleaned as they do tend to get clogged with soot, sometimes that will solve the problem.

 

BTW you haven't have the "Dieselgate fix" done have you (does it even apply to your Yeti?)? Early EGR failure after that is not uncommon.

14 minutes ago, PetrolDave said:

BTW you haven't have the "Dieselgate fix" done have you (does it even apply to your Yeti?)? Early EGR failure after that is not uncommon.

 

It does apply to that ECU and no, it hasn't been done based on its SW version

Hi langers2K

 

You are correct as they keep asking to update the memory map for the engine and every time I have told them not to do anything with updating.

Just my luck to have the EGR valve in the most difficult place let alone strip it down and clean out the coke after some 131,000 miles nearly. My old Vauxhall Combo 1.7 van was accessible and stripped it completely down and scrapped out all the burnt gunk and soot and back in business again. By the sound of it the Yeti is a complete nightmare to clean out or swop for a new one. Properly have a heart attack if I contact a Skoda Dealer for the work and the way they charge up for separate nuts and washers that come normally with the whole item. Any ideas on the average price for this job?