Check Sum Errors

[CrickiKaze]

Starting a new but may be a continuation from this thread https://www.audizine.com/forum/showt...ighlight=P0606

Going down a rabbit hole now, coming back from a work trip (3+ monthish) I did have to replace the battery, did swap both upstream o2 sensors again and cleared all codes, any driving I've done is in and out of the garage. Start up normal after replacing the battery i. e. cold start high idle but will not do it now after the initial battery change 1st start. Check Sum Error was initially on ECU2 while now starting today is on ECU 1 as well while having bank 1 sensor 1 throwing codes. Have to wonder if ECUs are fraking out and shorts in the harness due to the age... any ideas. I'll be heading out for work again for I don't know how long but will be digging into as much info as I can before I throw my hands up and drop the car off at the dealer.

Saturday,25,January,2025,15:28:44:26888
VCDS Version: Release 24.7.1 (x64) Running on Windows 10 x64
www.Ross-Tech.com

Address 11: Engine II Labels: 079-910-560-BNS2.lbl
Control Module Part Number: 8E1 910 560 J HW: 8E1 907 560
Component and/or Version: 4.2L V8/4V FSI ª0010
Software Coding: 01040009180F0160
Work Shop Code: WSC 32496 003 1048576
VCID: 2D040379F117AEE2C4D-8078
1 Fault Found:

012440 - Internal Control Module
P3098 - 001 - Memory Check Sum Error
Freeze Frame:
Fault Status: 01100001
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 241424 km
Time Indication: 0

Freeze Frame:
RPM: 958 /min
Load: 36.8 %
Speed: 0.0 km/h
Temperature: 9.0°C
Temperature: 15.0°C
Absolute Pres.: 980.0 mbar
Voltage: 13.589 V


Saturday,25,January,2025,15:38:53:26888
VCDS Version: Release 24.7.1 (x64) Running on Windows 10 x64
www.Ross-Tech.com

Address 01: Engine Labels: 079-910-560-BNS1.lbl
Control Module Part Number: 8E1 910 560 J HW: 8E1 907 560
Component and/or Version: 4.2L V8/4V FSI ª0010
Software Coding: 01040009180F0160
Work Shop Code: WSC 22102 444 12166
VCID: 2D040379F117AEE2C4D-8078
2 Faults Found:

006435 - Please Check DTC Memory of ECU Number 2
P1923 - 008 -
Freeze Frame:
Fault Status: 01101000
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 241424 km
Time Indication: 0

Freeze Frame:
RPM: 966 /min
Load: 36.5 %
Speed: 0.0 km/h
Temperature: 9.0°C
Temperature: 15.0°C
Absolute Pres.: 980.0 mbar
Voltage: 13.716 V

012434 - Internal Control Module
P3092 - 004 - Memory Check Sum Error
Freeze Frame:
Fault Status: 01100100
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 241424 km
Time Indication: 0

Freeze Frame:
RPM: 712 /min
Load: 25.5 %
Speed: 5.0 km/h
Temperature: 48.0°C
Temperature: 18.0°C
Absolute Pres.: 980.0 mbar
Voltage: 13.970 V


Readiness: 0110 1101


Saturday,25,January,2025,15:46:48:26888
VCDS Release 24.7.1 (x64): Generic OBD2
Mode 07: Pending emission related fault codes

Address 7E8: 2 Faults Found:
P0135 - Oxygen (Lambda) Sensor B1 S1; Heating Circuit: Malfunction
P0130 - Oxygen (Lambda) Sensor B1 S1: Malfunction in Circuit

Address 7EA: 1 Fault Found:
P0606 - Internal Control Module: Processor Fault

[CrickiKaze]

Ordered new injectors, not sure when I'll get to it but the car won't be driven till I can isolate the ecu(s). Taking a stab at injectors as with the little I have seen from my searching injectors was one of the issues in one I found, different model and around the same year assuming some coding is similar between models as IIRC it was a DI motor. Will be pulling the harness' from ecu and relays later at some point to check for corrosion, I replaced all the relays under the ecu last year with new and updated relays.

Schematics would be helpful or anything with readings for volt/amp/ohm info.