C0234
Wheel Speed Sensor Frequency Error
The ABS control module has detected that one of the wheel speed sensor signals has a frequency outside the plausible range, e.g. unrealistically high pulses or signal dropouts at speed. Stability control may be limited.
The ABS control module has detected that one of the wheel speed sensor signals has a frequency outside the plausible range, e.g. unrealistically high pulses or signal dropouts at speed. Stability control may be limited.
Common causes
- high
Tone ring damaged, missing teeth, or contaminated
One of the most commonly reported causes for this code — check this first.
Typical part cost: $90-440
- medium
Sensor air gap incorrect (loose mounting)
A plausible cause — test and verify before replacing parts.
Typical part cost: $90-440
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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 C0234 mean?
C0234 means "Wheel Speed Sensor Frequency Error". It is a generic OBD-II code that points to a fault in the chassis.
What are the most common causes of C0234?
tone ring damaged, missing teeth, or contaminated; sensor air gap incorrect (loose mounting); 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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