DTC code
C0020
ABS Pump Motor Control
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: Pump motor seized after long inactivity
- medium: Pump motor relay welded or open
- medium: Power supply connection corroded
Diagnostic steps
Check the components involved: abs pump motor, abs control module, pump motor relay, power supply wiring. Verify wiring and connectors before replacing any part. Job difficulty: hard (workshop equipment required). Typical European range — 300-1400 EUR, 1.5-5 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 C0020
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