P0562 on a Hyundai: Causes, Fixes & Repair Cost

🟠 Moderate severity · drivable

You can usually drive a Hyundai for a short time, but a failing charging system will drain the battery and can leave you stranded, so get it checked soon.

What P0562 means on a Hyundai

On a Hyundai, P0562 means the engine computer sees system voltage below about 10 volts. A healthy Hyundai charges at 13.5–14.5 volts with the engine running, so this code points to a weak battery, a failing alternator, or a bad connection.

Is P0562 common on Hyundais?

P0562 shows up on Elantras, Sonatas, Tucsons, and Santa Fes with aging batteries or failing alternators. Hyundai's electrical system is sensitive to voltage, and a weak battery can cause the engine computer to log this code even if the car still starts.

Commonly reported on: Elantra, Sonata, Tucson, Santa Fe.

Symptoms

Check engine light on
Slow cranking or hard starting
Dim headlights
Battery warning light on the dash

Common causes

most common: Weak or old battery
common: Failing alternator
common: Corroded or loose battery terminals
less common: Charging wiring or connection issue

How to fix it

Fix	DIY?	Typical cost
Test the battery and replace it if weak	Yes	$120–250
Clean and tighten the battery terminals	Yes	$0–20
Replace the alternator	Mechanic	$400–900

Frequently asked questions

Can I drive my Hyundai with a P0562 code?

Yes, for a short time, as long as it starts. If the alternator fails, the battery will die and the car can stall, so have it checked soon.

Is the battery or the alternator the usual cause of P0562 on Hyundais?

Aging batteries are the most common cause. Hyundai's electrical system is sensitive to voltage, so a weak battery can set this code even when the car still starts.

How much does it cost to fix P0562 on a Hyundai?

A new battery runs about $120–$250, and cleaning the terminals is nearly free. Alternator replacement runs about $400–$900.