Does anyone know why my Ford does not store the fault codes. It overhaeated a year ago and an warning lamp plus overheat message came up on the dashboard but the Ford agent said no codes stored.

Today it shut down to low power when booting it up a hill, and gave a "engine system failure warning" plus a red light. I stopped and the engine then restarted perfectly. I expect it was EGR, but yet again when I connect up with the laptop no fault code was stored. Is this normal for Fords of that period?