P0562 – System Voltage Low

Meaning:

When the PCM has detected that the ignition feed circuit has very low voltage, the P0562 happens
The P0562 is triggered when the PCM has detected that the ignition feed circuit has very low voltage

The PCM has detected that the ignition feed circuit has very low voltage. Meaning the charging system might not be working.

Main Symptoms:

Possible Causes:

  • Defective alternator
  • High resistance either in alternator-battery circuit, alternator-PCM circuit or both
  • Defective PCM

Diagnostic Steps:

  • Check whether battery voltage is sufficient
  • Ensure battery is properly connected then check alternator belt
  • Using a digital volt ohm meter (DVOM), check whether the charging system is working
  • Reset the code then do a test drive. If the code returns check PCM voltage

Read More: How To Test A Car Battery With A Multimeter