DTC C1213 Wheel Speed Frequency Error: DTC Detecting Condition

DTC DETECTING CONDITION

Item		Detecting Condition	Possible cause
Case 1	DTC Strategy	Signal monitoring	Improper installation of wheel speed sensor Abnormal Rotor and wheel bearing Inoperative Wheel speed sensor Inoperative HECU
	Monitoring Period	Continuous
	Enable Conditions	When short cut between the wheel speed sensor supply and the battery.
	Fail Safe	Wheel speed sensor signals are not reliable.
Case 2	DTC Strategy	Signal monitoring
	Monitoring Period	Continuous
	Enable Conditions	The monitoring reports a failure if the ABS target slip is exceeded for a time period > = 10 s at one or more wheels. If the driver brakes or the velocity is lower than 50 km/h the detection time is enlarged to 60 s.
	Fail Safe	Reduced function of the ESC system