Free API
C1251high severityChassis

Abnormal Motor Relay Circuit

on 2020 Subaru Legacy 2.5L H4 · AWD

What this code means

A fault was detected in the ABS pump motor relay circuit. Related to OBD code C0110 (ABS pump motor circuit).

Symptoms

  • ABS warning light on
  • VDC light on
  • No ABS pump operation

Common causes

  • Faulty motor relay
  • ABS pump motor fault
  • Wiring or connector fault
  • Corroded ground

Diagnostic steps

  1. Scan for motor circuit codes
  2. Test motor relay operation
  3. Check pump motor resistance
  4. Inspect wiring and grounds

Other Chassis codes on this vehicle

🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years. Spot an error? Use the Help link above — a human reads every report.
Stuck on this repair? Take it to The Diag Desk — ask a master tech about this exact car → real human answer within 24h, never AI
⚠ STILL BEHIND THE PAYWALL
The 2020 Subaru Legacy repair data is incomplete because no one has sponsored it yet. For $99, we generate the full step-by-step procedures, then fact-check them with a second AI pass and your expert review. Your name on every procedure, permanently.
The same data would cost $169/mo from Mitchell1 or $30/year from ALLDATAdiy — and you'd be renting access, not freeing it. Sponsor once, free forever.
Sponsor the Subaru Legacy — $99 →
Building an app?
Free API access to all this data — 10 requests/day, no card required.
Get an API key →
Run a shop?
Manage repairs, estimates, and customers with ShopBase — $249/mo, all features included.
Try ShopBase →