P0562 — P0562 — System Voltage Low
Drivable short-term, but fix now to avoid damage.
What P0562 means
P0562 means the computer detected that your vehicle's electrical voltage dropped below the normal range while running. This usually points to a weak alternator, a tired battery, or bad connections. Without steady voltage, electronic systems start misbehaving and the engine may shut off.
Common symptoms
- Battery or charging warning light on the dash
- Dim or flickering headlights and interior lights
- Engine stalls or struggles to start
- Electrical accessories cutting in and out
- Slow, sluggish cranking when starting
Common causes
- Failing alternator not charging properly
- Weak or dying battery
- Loose, corroded, or dirty battery terminals
- Worn or slipping serpentine/alternator belt
- Damaged charging system wiring or ground connection
- Blown fuse or faulty voltage regulator
Typical repair cost
$100 – $650
Varies by vehicle and root cause.
Frequently asked questions
Can I drive with a P0562 code?
Only if you absolutely must, and not far. With low voltage the car can stall at any moment and might not restart, so it's safer to get it towed or repaired before driving.
How much does it cost to fix P0562?
It depends on the cause. A new battery or cleaning terminals may run around $100-$250, while replacing an alternator typically falls between $350 and $650 with parts and labor.
Is P0562 serious?
Yes. Low system voltage can leave you stranded and can also damage sensitive electronics over time, so it's considered a high-priority repair.
What's the difference between a battery and alternator causing P0562?
A weak battery often shows up as hard starting, while a failing alternator causes the voltage to drop after the engine is already running. A mechanic can test both quickly to pinpoint which one is at fault.