The engine light was on and the overheating warning was also displayed.

The vehicle initially presented with ignition coil circuit faults and a catalyst efficiency fault. Loose ignition coil connectors were found and secured, which resolved the coil circuit faults. The remaining catalyst efficiency fault was rectified by replacing the Bank 1 oxygen sensor. During final checks, the radiator fan was found not to be operating correctly even though no related fault codes were stored. Further testing identified an erratic coolant temperature sensor signal, which was preventing correct radiator fan operation and triggering the overheating warning.