Electrical · Severity: Moderate
P0562 — System Voltage Low
The ECU supply voltage is below the expected range.
Common symptoms
- Dim lights
- Several warning lights
- Hard starting
Likely causes
- Weak battery
- Failing alternator
- Corroded battery terminals or grounds
- Parasitic drain
First test to run
Measure battery voltage at rest and charging voltage at 2,000 rpm with loads on (13.8–14.7 V expected).
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