Free API
C1241moderate severityChassis

Abnormal Battery Voltage (Low)

on 2020 Subaru Legacy 2.5L H4 · AWD

What this code means

The ABS/VDC module detected system voltage below the operating threshold. Related to OBD code P0562 (system voltage low).

Symptoms

  • ABS/VDC warning light on
  • Systems intermittently disabled
  • Slow cranking or dim lights

Common causes

  • Weak or failing battery
  • Faulty alternator
  • Corroded battery terminals
  • Poor ground connection

Diagnostic steps

  1. Test battery voltage and load
  2. Check alternator output
  3. Inspect battery terminals
  4. Verify ground connections

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 →