P0562 — System Voltage Low
Category: Powertrain Severity: Medium
Updated:
DTC code P0562 means: System Voltage Low. It falls under the "Powertrain" category, with an estimated severity of Medium. Common causes include weak or failing battery, alternator not charging and loose or broken serpentine belt; it's worth confirming the diagnosis before replacing parts.
Possible causes
- Weak or failing battery
- Alternator not charging
- Loose or broken serpentine belt
- Corroded terminals or grounds
- Parasitic drain with the car off
Symptoms
- Slow cranking
- Battery warning light on
- Dim lights
- Various electrical glitches
How to diagnose it step by step
- Measure resting battery voltage.
- Measure charging voltage while running.
- Check terminals and grounds.
- Load-test the battery.
- Check the belt and alternator.
How to fix it
Measure battery voltage engine-off (12.4–12.7 V) and running (13.8–14.7 V). If it doesn't exceed 13.5 V running, check the belt and alternator.
Estimated repair cost
Battery: $120–250. Alternator: $350–800.
Frequently asked questions
What does DTC code P0562 mean?
System Voltage Low.
Is code P0562 serious?
Severity Medium. Not urgent, but worth diagnosing to avoid bigger damage.
Can I keep driving with code P0562?
Drive only as needed: if the alternator isn't charging, the car will stop when the battery runs down.
Related codes
P0563 P0571 P0532 P0530 P0523 P0522 P0521 P0509 P0508 P0507
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