P0562: System Voltage Low
Can you still drive? Use caution. If the battery light is on, the battery is not being charged. You have limited driving time before the battery dies and the engine stalls.
What Does P0562 Mean?
Code P0562 indicates that the ECM has detected that the system voltage (charging system output) has dropped below the expected minimum, typically below 10 volts. The vehicle's electrical system normally operates at 13.5-14.5 volts with the engine running. Low voltage can cause erratic operation of multiple electronic systems.
Need to read your codes?
An OBD-II scanner lets you read and clear diagnostic trouble codes from your vehicle's computer. Most scanners work with any car made after 1996.
Browse OBD-II Scanners on AmazonCommon Causes
- Failing alternator
- Worn drive belt
- Corroded battery terminals
- Weak or failing battery
- Poor ground connection
Symptoms
- Check engine light on
- Dimming headlights
- Slow or hard engine cranking
- Battery warning light on
- Electrical accessories malfunctioning
Diagnostic Steps
- 1Test battery voltage with engine off (should be 12.4-12.7V)
- 2Test charging voltage with engine running (should be 13.5-14.5V)
- 3Load test the battery
- 4Inspect drive belt condition and tension
- 5Clean battery terminals and ground connections
- 6Test alternator output with multimeter
- 7Check for parasitic draw
Recommended Parts & Tools
Estimated Repair Cost
| Type | Estimated Cost |
|---|---|
| Total Repair Cost Range | $20 - $600 |
| Parts Only (DIY) | $200 - $600 |
| Labor (1-3 hrs @ $100/hr) | $100 - $300 |
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Chat with AI About P0562Commonly Affected Vehicles
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Frequently Asked Questions
Can a bad battery cause P0562?
Yes, a weak battery that cannot hold a charge properly can cause voltage drops that trigger P0562. Battery testing is an important first step.
How do I test my alternator?
With the engine running, measure voltage across the battery terminals. It should read 13.5-14.5 volts. If it reads below 13 volts, the alternator is likely failing.
Community Fix Reports
Community reports are user-submitted and not verified by Auto AI Buddy. Results may vary.
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