Pulled the codes, somewhat the same so going to go ahead with more check valve swap and see where that gets me.

VCDS-Lite Version: Release 1.2
Saturday, 20 August 2016, 09:14:27.


Chassis Type: 8E - Audi A4 B6
Scan: 01,02,03,08,09,0F,11,15,16,17,18,36,37,45,46,55,56 ,57,65,67,69,75,76,77

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Address 01: Engine Labels: Redir Fail!
Controller: 8E0 909 518 AF
Component: 1.8L R4/5VT G 0002
Coding: 0016751
Shop #: WSC 63351
VCID: 749B5FD357A3
5 Faults Found:
17978 - Engine Start Blocked by Immobilizer
P1570 - 008 - Implausible Signal - Intermittent
16684 - Shareware Version. To Decode all DTCs
P0300 - 008 - Please Register/Activate - Intermittent
16685 - Shareware Version. To Decode all DTCs
P0301 - 008 - Please Register/Activate - Intermittent
17519 - Oxygen (Lambda) Sensor Regulation: Bank 1: System too Lean
P1111 - 002 - Lower Limit Exceeded
17544 - Shareware Version. To Decode all DTCs
P1136 - 001 - Please Register/Activate
Readiness: 0000 0000

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