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DTC C1201/51 Engine Control System Malfunction: Description

If the engine control system is malfunctioning, VSC and TRAC operations are prohibited, as a fail safe function. If a normal signal is received from the engine control system, the fail safe function cancelled and the DTC will be cleared.

DTC DETECTION CONDITION CHART

DTC Code	DTC Detection Condition	Trouble Area
C1201/51	Engine control system malfunction signal continues for 1 second or more.	Engine control system