hi bomarc
The A320 has two Angle sensors on each Thrust Lever. If the two sensors disagree about the TLA, on the ground, but not at TOGA or FLX/MCT (i.e. take-off thrust setting), the FADEC selects Idle thrust irrespective of thrust lever position. An ECAM warning occurs and as part of the drill the pilot backs this up by selecting idle.
If neither sensor produces a valid signal, on the ground, the FADEC selects Idle thrust. An ECAM etc......
There has been no mention so far of a related ECAM warning, and I feel sure it would have been mentioned if it had occurred. Both (known) TLA failure modes produce thrust Idle on the ground, and we have heard that 1.2 EPR was recorded on No.2 engine. Obviously some deep technical investigation required.
TP