The code P0685 (https://www.yourmechanic.com/article/p0685-obd-ii-trouble-code-ecm-pcm-power-relay-circuit-malfunction-by-valerie-johnston) refers to the main ECM (computer) relay has lost power. Check the main relay (https://www.yourmechanic.com/services/main-relay-computer-fuel-system-replacement) and see if its getting hot. A hot relay will disconnect to cool off and reconnect. If the relay is getting...
Hi there. This can be a computer issue, but from the codes and the issue it sounds more like a voltage problem. If there is low voltage from a bad battery (https://www.yourmechanic.com/services/battery-replacement) or a bad connection then the vehicle will...
