DTC C1337: Diameter of the Tire is not Uniform [08/2015 - ]: Description

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

DTC Code	DTC Detection Condition	Trouble Area
C1337	Either condition is met: The diameter of the 2 front wheels and 2 rear wheels is different. There is a wheel speed sensor fault.	Speed sensor Speed sensor rotor Speed sensor circuit Tire size