DTC U0073/94 Control Module Communication Bus OFF; DTC U0100/65 Lost Communication with ECM / PCM; DTC U0123/62 Lost Communication with Yaw Rate Sensor Module; DTC U0124/95 Lost Communication with Lateral Acceleration Sensor Module; DTC U0126/63 Lost Communication with Steering Angle Sensor Module: Description

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.

The skid control ECU receives signals from the ECM, steering angle sensor, and yaw rate and acceleration sensor via the CAN communication system.

DTC DETECTION CONDITION

DTC Code	DTC Detection Condition	Trouble Area
U0073/94	Any of the following is detected After the output of data from the skid control ECU is completed, sending continues for 5 seconds or more The condition that bus OFF state occurs once or more within 0 1 seconds occurs 10 times in succession (Sent signals cannot be received) With the IG1 terminal voltage 10 V or more, a delay in receiving data from the yaw rate and acceleration sensor and steering angle sensor continues for 1 second or more With the IG1 terminal voltage 10 V or more, the condition that a delay in receiving data from the yaw rate and acceleration sensor occurs more than once within 5 seconds occurs 10 times in succession within 60 seconds	CAN communication system
U0100/65	Either of the following is detected With the IG1 terminal voltage 10 V or more and the vehicle speed 15 km/h (9 mph) or more, data cannot be sent to the ECM for 2 seconds or more With the IG1 terminal voltage 10 V or more and the vehicle speed 15 km/h (9 mph) or more, data from the ECM cannot be received for 2 seconds or more	CAN communication system (Skid control ECU to ECM)
U0123/62	Either of the following is detected With the IG1 terminal voltage 10 V or more, data from the yaw rate sensor cannot be received for 1 second or more With the IG1 terminal voltage 10 V or more, the following occurs 10 times in succession within 60 seconds Data from the yaw rate sensor cannot be received once or more within 5 seconds	CAN communication system (Skid control ECU to yaw rate and acceleration sensor)
U0124/95	Either of the following is detected With the IG1 terminal voltage 10 V or more, data from the acceleration sensor cannot be received for 1 second or more With the IG1 terminal voltage 10 V or more, the following occurs 10 times in succession within 60 seconds Data from the acceleration sensor cannot be received once or more within 5 seconds	CAN communication system (Skid control ECU to yaw rate and acceleration sensor)
U0126/63	Either of the following is detected With the IG1 terminal voltage 10 V or more, data from the steering angle sensor cannot be received for 1 second or more With the IG1 terminal voltage 10 V or more, the following occurs 10 times in succession within 60 seconds Data from the steering angle sensor cannot be received once or more within 5 seconds	CAN communication system (Skid control ECU to steering angle sensor)