P0562
System Voltage Low
Quick answer: P0562 means system Voltage Low. Fixing the underlying cause typically runs $195 to $910 at an independent shop. Drive gently, service soon.
- Severity
- Moderate
- Safe to drive?
- Drive gently, service soon
- Typical repair
- $195 to $910
- Most likely cause
- A failing alternator no longer producing full output (the most common cause)
What P0562 means
The computer watched the electrical system's voltage sag below the healthy range, which on a running car should sit around 13.5 to 14.5 volts with the alternator charging. Low system voltage while driving usually means the alternator is not keeping up, whether from a worn alternator, a slipping belt, or a bad connection bleeding voltage along the way. Modern cars are rolling computer networks, so as voltage drops you may see a cascade of unrelated-looking warnings before anything actually quits.
Common symptoms
What drivers usually notice with this code.
- A battery or charging warning light, often alongside the check-engine light
- Dim headlights or interior lights, especially at idle
- Multiple random warning lights or flickering gauges as voltage sags
- Slow cranking on the next start, or a car that needs a jump
- Electrical accessories acting oddly: weak wipers, lazy windows, resetting radio
Common causes
Ranked from most to least likely.
- 1A failing alternator no longer producing full output (the most common cause)
- 2A worn, glazed, or slipping serpentine belt, or a failing belt tensioner, spinning the alternator too slowly
- 3Corroded or loose battery terminals or ground straps adding resistance
- 4A battery failing in a way that drags the system down
- 5A damaged or corroded charging wire between the alternator and battery
- 6A parasitic drain or overloaded circuit pulling more than the system can supply
Can I keep driving?
Short distances, yes, but treat it like a countdown: if the charging system is failing, the car is running down the battery as you drive and can die without much warning, so head somewhere useful, not somewhere far.
Severity: Moderate. A flashing check-engine light always means stop, whatever the code says.
Ballpark cost
What P0562 usually costs to fix
A range, not a quote. What you pay depends on your vehicle, your area, and which of the causes above turns out to be the real one.
Typical parts and labor at an independent shop. Dealer rates run higher.
That spread is wide on purpose. P0562 points at a system, not a single part, so the real answer depends on what the diagnosis finds. Use the range to know what to expect. If an estimate comes in higher, it usually means the specific repair is more involved, and it is always fair to ask what is included.
Next steps
What to do next
Ask for a charging-system test, which most shops run quickly and which measures the battery, alternator output, and voltage drop across connections in one pass. Cleaning corroded terminals or replacing a worn belt is the cheap outcome; an alternator is the moderate one, and it pays to price a quality reman unit against new. Whatever the cause, deal with it promptly, because the failure mode here is a car that strands you, often at night with everything electrical fading at once.
Walk in informed
Ask for the diagnosis in writing and which test confirmed it, so you understand exactly what is being fixed. Fixxr shows you what the job typically costs near you, so you can approve the work with confidence.
Sources & further reading
- NHTSA — Check for vehicle safety recalls — look up open recalls for your vehicle by VIN, free
- FTC — Auto repair basics — your consumer rights at the repair shop
- AAA — Car repair and maintenance costs — independent guidance on what repairs should cost
Cost ranges and guidance reviewed July 2026.
P0562 FAQ
P0562 questions, answered
Can I drive with a P0562 code?
Short distances, yes, but treat it like a countdown: if the charging system is failing, the car is running down the battery as you drive and can die without much warning, so head somewhere useful, not somewhere far.What does the P0562 code mean?
The computer watched the electrical system's voltage sag below the healthy range, which on a running car should sit around 13.5 to 14.5 volts with the alternator charging. Low system voltage while driving usually means the alternator is not keeping up, whether from a worn alternator, a slipping belt, or a bad connection bleeding voltage along the way. Modern cars are rolling computer networks, so as voltage drops you may see a cascade of unrelated-looking warnings before anything actually quits.What are the most common causes of a P0562 code?
The most likely causes, roughly in order, are a failing alternator no longer producing full output (the most common cause); a worn, glazed, or slipping serpentine belt, or a failing belt tensioner, spinning the alternator too slowly; corroded or loose battery terminals or ground straps adding resistance; a battery failing in a way that drags the system down. Ask for a charging-system test, which most shops run quickly and which measures the battery, alternator output, and voltage drop across connections in one pass. Cleaning corroded terminals or replacing a worn belt is the cheap outcome; an alternator is the moderate one, and it pays to price a quality reman unit against new. Whatever the cause, deal with it promptly, because the failure mode here is a car that strands you, often at night with everything electrical fading at once.How much does it cost to fix a P0562 code?
Fixing the underlying problem behind a P0562 code typically runs $195 to $910 at an independent shop, including parts and labor. The exact figure depends on your vehicle and which part turns out to be at fault.
You deserve a fair fix.
Diagnose, post, best repair comes to you
