P0561 OBD II Trouble Code System Voltage Unstable

Symptoms of P0561 OBD II Trouble Code

  • Malfunction Indicator Light On
  • Red battery light On
  • Transmission may not shift
  • Engine may not start or if it does start, may stall out and die
  • Lower fuel economy

Common Causes of P0561 OBD II Trouble Code

  • High resistance in the cable between the alternator and battery - possible
  • High resistance/open circuit between the alternator and the control module - possible
  • Alternator faulty ? most common
  • Failed PCM - unlikely