DTC C1337/37 Different Diameter Tire Malfunction: Description

The skid control ECU measures the speed of each wheel by receiving signals from the speed sensor. These signals are used for recognizing that all 4 wheels are operating properly. Therefore, all wheel signals must be equal.

DTC DETECTION CONDITION AND TROUBLE AREA

DTC Code	DTC Detection Condition	Trouble Area
C1337/37	When either of the following conditions is detected: The diameter is different between the 2 front wheels and the 2 rear wheels. There is a wheel speed sensor fault.	Speed sensor Speed sensor rotor Speed sensor circuit Tire size