How to Fix Roewe Fault Code P0700?
1 Answers
Roewe fault code P0700 can be resolved by: 1. Replacing the main relay; 2. Replacing the speed sensor. The fault code indicates a malfunction in the vehicle's main relay, which is the primary power supply relay for the engine control unit (ECU). It provides power to the engine control unit. In some vehicles, the main relay has a delay function, continuing to supply power for a few seconds after the ignition is turned off to allow components like the throttle to return to their initial positions. The speed sensor detects the engine speed, determines the crankshaft's position, and monitors signals for the piston's top dead center and crankshaft angle. These signals are then sent to the ECU to control ignition timing and fuel injection timing.