Code result
C0238
Speed Wheel-to-Wheel Mismatch
Moderate severity
What it means
The ABS control module has detected an implausible speed difference between wheels that cannot be explained by cornering. This typically points to one suspect sensor, mismatched tyre sizes or a damaged tone ring.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Tyre sizes or wear levels do not match across axles
highOne of the most commonly reported causes for this code — check this first.
Tone ring missing teeth on one wheel
mediumA plausible cause — test and verify before replacing parts.
Wheel speed sensor degraded
lowLess common, but worth ruling out after the more likely causes.
Related help
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