C0238
Speed Wheel-to-Wheel Mismatch
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.
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.
Common causes
- high
Tyre sizes or wear levels do not match across axles
One of the most commonly reported causes for this code — check this first.
Typical part cost: $90-660
- medium
Tone ring missing teeth on one wheel
A plausible cause — test and verify before replacing parts.
Typical part cost: $90-660
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does C0238 mean?
C0238 means "Speed Wheel-to-Wheel Mismatch". It is a generic OBD-II code that points to a fault in the chassis.
What are the most common causes of C0238?
tyre sizes or wear levels do not match across axles; tone ring missing teeth on one wheel; wheel speed sensor degraded — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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