C1237 TOYOTA, LEXUS, SCION: SPEED SENSOR ROTOR FAULTY
POST UPDATED IN January, 2023
C1237 TOYOTA, LEXUS, SCION: SPEED SENSOR ROTOR FAULTY
The slip control ECU measures the speed at which each wheel is spinning by taking into account the signals sent by the Speed Sensor. These signals are used to determine if the operation of the 4 wheels is right. Therefore, all-wheel signals must be equal.
The OBDII fault code C1237 is set at the moment the Skid Control ECU finds some differences between the Four-Wheel Speed Sensor output or irregular pulse signals related to three sensors onwards.
Reasons for storing the C1237 OBD2 diagnostic code:
To solve OBDII DTC C1237, try this: