DTC code
C0030
Left Front Tone Wheel
Technical guide
reference — not individually verifiedSymptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Probable causes
- high: Metal debris on tone ring (magnetic encoder)
- medium: Sensor air gap too large
- medium: Sensor intermittent at temperature
Diagnostic steps
Check the components involved: wheel speed sensor fl, tone ring, hub bearing. Verify wiring and connectors before replacing any part. Job difficulty: medium. Typical European range — 80-400 EUR, 0.5-2.5 h. Reference values only.
Cross-checked technical synthesis (QA). It does not replace the manufacturer's procedure.
AI here is a librarian: this page shows only what mechanics confirmed, or says “unknown”. It never suggests a diagnosis — MECCANIC interprets the code, never your car.
0 confirmed cases on C0030
Nothing confirmed yet for this code. No guess is offered on purpose.
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