DTC C1201/51 Engine Control System Malfunction: Description

When the skid control ECU receives an engine control system malfunction signal, this DTC is set and the VSC warning light is illuminated. (The VSC system is operating normally.)

While the engine control system is malfunctioning, as a fail safe function, TR(A)C and VSC controls are prohibited. If a normal signal is received from the engine control system, the warning light will be turned off, the fail safe function will be cancelled and this DTC will be cleared.