P0562Cars & SUVs
Easy

P0562System voltage low

System voltage is below the normal range. That can spawn multiple random codes, hard starting, and flaky electronic modules.

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Likely causes

  • Weak or end-of-life battery (common after hard winters)
  • Alternator not charging enough
  • Bad ground or oxidized battery cable

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Recommended checks

  1. 1

    Load-test the battery (CCA) and check alternator output (about 14.2–14.8 V under charge)

  2. 2

    Clean battery terminals and engine/chassis grounds

  3. 3

    Replace the battery or alternator based on test results

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Parts to replace