P0562 means the powertrain control module (PCM) has detected that system voltage is below the expected threshold for normal operation. The code usually points to a problem in the charging system, battery, or the wiring that feeds them, rather than a fault inside the computer itself.
A battery with low capacity, a shorted cell, or high internal resistance cannot maintain system voltage, especially under load. This is the single most common trigger for P0562.
If the alternator cannot produce enough current to recharge the battery and power vehicle systems, system voltage drops below the PCM threshold while driving.
High resistance at the terminals or along main power and ground cables reduces effective voltage reaching the PCM and other modules.
A component that stays on after the ignition is off can discharge the battery overnight, causing low voltage at the next key-on event.
Broken, chafed, or corroded wires between the alternator, battery, and power distribution can create voltage drops that set the code.
A faulty PCM misreading system voltage is possible but genuinely rare; it should only be considered after the entire charging system, battery, and wiring have been proven good.
It is not recommended. Low system voltage can cause stalling, loss of power steering or braking assist on some vehicles, and can leave you stranded.
Usually no. P0562 is most often caused by the battery, alternator, or wiring. PCM replacement is rarely the correct fix and should only be considered after the entire charging and power-distribution system is verified good.
A new battery itself is unlikely to be faulty, but loose or corroded terminals, poor grounds, or a failing alternator can still produce low system voltage even with a good battery.
The underlying voltage problem has not been fixed. Clear the code only after the battery, alternator, cables, and any parasitic draw have been tested and repaired.