Hi, looking for some advise. Sons Lupo has been running grand, apart from today when check engine light came on. Have done a scan and the following codes have come up; 01: Engine. 1. 17978 - P1570 Engine start blocked by immobilizer intermittent. 2. 17584 - p1176 Lambda behind catalyst control limit reached. 3. 16684 - p0300 Random/Multiple misfires detected, intermittent. 4. 16684 - p0301 Cylinder 1 misfire detected, intermittent. 17: Instruments. 1. 01039 Coolant temperature sensor (G2) Open or Short to Plus intermittent. 25: Immobilizer. 1. 01176 Key Unauthorized intermittent. Again, any advise as what to be checking or replacing, greatly received. Cheers, Davyjp.