Ok guys. Got car back from subaru last night, running great again.
Just FYI, below show's the service invoice:
check vehicle for not starting
carry out diag tests
code 13 camshaft pos sensor fault in memory
code 24 idle speed control valve (stuck)
supply and fit new cam pos sensor - still no good
follow test proceedures
check cam sensor input signal at ECU with osilloscope - no good
check input signal of cam sensor wire - OK
carry out continuity test from sensor to ECU - 1 wire ok, 1 wire open circut
trace fault back to engine room harness not properly plugged in
re plug in - all OK , clear memory and road test - positive result
NOTE
if vehicle developes idling problems, recommend replacing - idle speed control valve [in memory old fault]