DTC C1337: Different Diameter Tire Malfunction: Description
WARNING: This page is about a different car, the 2009 Lexus IS 350 and 2009 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.
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 Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1337 | The following occurs in 3 consecutive trips: At a vehicle speed of 20 km/h (12 mph) or more, there is a 20% difference or greater in the average speed between the front wheels and rear wheels for 20 seconds or more. |
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