P0562 means the engine control unit has detected that the system voltage has dropped below the normal operating range, typically below 11.5 volts while the engine is running. This usually points to a failing alternator, a worn serpentine belt, corroded battery terminals, or an aging battery.
Scan your own car in about 60 seconds: see whether P0562 is really what it has, how urgent it is, and what the fix should cost. Free on iPhone and Android, on any ELM327 adapter.
Get Skanyx freeP0562 means the engine control unit has detected that the system voltage has dropped below the normal operating range, typically below 11.5 volts while the engine is running. This usually points to a failing alternator, a worn serpentine belt, corroded battery terminals, or an aging battery.
P0562 is a electrical-related diagnostic trouble code classified as moderate severity. When your vehicle's ECU detects this condition, it stores P0562 and illuminates the check engine light.
If your vehicle has triggered P0562, you may notice one or more of these symptoms:
Here are the most common causes of P0562:
No - address this immediately. Low system voltage can cause the engine to stall, disable safety systems like power steering and ABS, and leave you stranded. If the battery light is on, drive directly to a repair facility or pull over safely.
Follow these steps to pinpoint the root cause of P0562:
Repair costs for P0562 vary depending on the root cause and your vehicle. Here are typical estimates:
Prices estimated as of March 2026. Costs vary by region, vehicle, and shop.
Full repair guides
P0562 behaves differently depending on your vehicle. Select your car below for model-specific causes and known issues:
The Golf Mk5 and Mk6 with the 1.4 TSI can develop alternator pulley clutch failure, where the overrunning alternator pulley (OAP) seizes or slips, reducing charging output. The battery is located in the engine bay on most models and is easy to access for testing.
BMW uses an intelligent battery sensor (IBS) on the negative terminal that can fail and give false low-voltage readings. The E90 generation also has a known issue with the alternator voltage regulator failing gradually. Battery registration with a scan tool is required after battery replacement.
The Clio III and IV with the 1.5 dCi engine can develop serpentine belt tensioner failure, causing the belt to slip on the alternator pulley. The battery on these models is in the engine bay and accessible. Renault alternators are relatively affordable to replace.
The Octavia shares alternator and charging system components with the VW Golf. The 2.0 TDI alternator is robust but the wiring to the battery can develop high resistance at the crimp connectors, especially on vehicles older than 10 years. Check the main power cable condition.
These codes are often seen alongside P0562 or indicate related issues:
The most common cause is a failing alternator that can no longer maintain proper charging voltage. A worn serpentine belt, corroded battery terminals, or a weak battery are also frequent causes. The ECU sets P0562 when it detects voltage below approximately 11.5V.
Yes. A battery with a dead cell or severe internal degradation can drag system voltage down even while the alternator is working. If the battery is more than 4-5 years old and P0562 appears, have the battery load-tested as a first step.
It is not advisable. Low system voltage can cause the engine to stall, disable electronic power steering, and shut down safety systems. If the battery light is on, the alternator may have failed and the vehicle is running on battery alone, which will die within minutes to hours.
With the engine running, measure voltage at the battery terminals with a multimeter. It should read 13.5 to 14.8V. Then turn on headlights, A/C, and rear defroster. If voltage drops below 13V under load, the alternator is weak or failing.
Yes. Heavy corrosion on the battery terminals creates resistance that prevents full current flow. The voltage at the ECU drops even if the alternator output is fine. Cleaning the terminals with a wire brush and applying dielectric grease is a quick, inexpensive fix.
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Your car logged P0562. Skanyx reads it on any standard Bluetooth OBD2 adapter, tells you whether it is safe to keep driving, and shows the €15-€800 repair range so you know the number before a shop quotes you. Free on iPhone and Android, and you do not need to be a mechanic to read it.
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