Update:

First run with ISTA found 70 fault codes.

Cleared fault codes and 7 remained

0053A0 - VTG: No coding or faulty coding
005EBA - DSC steering angle sensor
00A06B - Aerial, bumper
00CD8B - DME: Local CAN communication fault
00E097 - Message (dim, 0x202) faulty, receiver GWS, transmitter FRM
the other 2 codes are for climate control

I pulled out the JBE and there was no sign of any corrossion or water ingress
I have not yet looked at the FRM

On the Control Unit Tree page:

JBE and FRM modules are both shown as green

VTG, DSC, GWS and DME are amber

Both VTC and VTC2 are red

I suppose this could explain why it tries to start but won't idle, if the VVT servos are not responding to commands from the DME. If in fact they are even receiving any commands.

Time to start digging into those circuits to see what I can find.

Does everyone recommend running a test plan for the VTC servos, or is there a common issuue that these fall under?

Or does a red module mean that the VVT module is bad?