Electrical supplySafety screen firstReviewed July 15, 2026
P0562System voltage low
A controller detected supply voltage below its calibrated threshold for the operating condition and duration.
Conditions that can produce P0562
These are diagnostic branches, not a ranked parts list. Prevalence and testing order depend on the exact vehicle and failure scene.
- Discharged, weak, damaged, or incorrect battery
- Generator or DC-DC output problem
- Loose, corroded, or high-resistance connection
- Excessive load or parasitic draw
- Battery sensor, wiring, ground, or charging-control fault
What to inspect next
- Address loss of steering/braking assist, repeated stalling, heat, or damaged battery immediately
- Measure at the battery and relevant controller with a known instrument
- Capture crank/wake and loaded voltage
- Test voltage drop, current, charging command, and battery condition
Evidence that strengthens the answer
Minimum voltage and event timeBattery test with temperature/contextCharging current and commandPositive and ground voltage-drop results
Verify the repair
Preserve the pre-repair record, document exactly what changed, then repeat the relevant operating condition safely. Confirm no current or pending fault returns, review permanent-code and readiness state where applicable, and state which tests or modules remained unavailable.
This page explains a commonly standardized code at a general level. Confirm the exact definition, module, status, test conditions, thresholds, wiring, and service process for the vehicle application using current official information.