Fault code P0560 – a step-by-step guide to diagnosing and fixing it

Error code P0560 is displayed and the check engine light is on - what does this mean?

The OBD system detects an error in the system voltage of the control unit, whereby the on-board voltage is outside the normal parameters. This DTC P0560 relates to the electrical supply system and may have slightly different limit values for different manufacturers.

What causes can this error code have?

• Defective alternator or generator
• Weak or defective vehicle battery
• Damaged cable connections to the control unit
• Defective voltage regulator
• Corroded or loose battery terminals
• Overloading of the electrical system
• Defective fuses in the circuit
• Faulty ground connections

What symptoms occur in parallel with fault code P0560?

• Starting problems: The vehicle is difficult or impossible to start
• Fluctuating idling speed: The engine runs unevenly at idling speed
• Electrical failures: Lighting or other electrical consumers are not working properly
• Battery warning light: Additional warning lights on the dashboard
• Engine shutdown: The engine stops while driving
• Weak headlights: Lighting becomes weaker at low engine speeds

How to fix the problem of error code P0560?

• The repair requires a systematic check of the electrical system, starting with the basic components.
• Check the battery completely and replace if necessary, including a voltage test under load and checking the battery terminals for tightness
• Test and repair or replace the alternator, measuring the output voltage at various engine speeds
• Check all cable connections to the engine control unit and repair or replace damaged cables
• Replace alternator voltage regulator, if available separately
• Clean and tighten ground connections, especially the main ground connection between the engine and bodywork
• Check fuses in the engine compartment and passenger compartment and replace defective fuses