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The diagnostic trouble code P0560:16-48 refers to an issue with the system voltage. This code indicates that the module receiving the code has detected a problem with the voltage level in the vehicle’s electrical system.

Here are some possible causes and solutions for this issue:

1. Weak or discharged battery: Check the battery voltage using a multimeter. If the battery voltage is low or the battery is discharged, it may need to be recharged or replaced. Ensure the battery connections are clean and tight.
2. Faulty alternator or charging system: A malfunctioning alternator or charging system can result in insufficient charging of the battery and low system voltage. Have the alternator and charging system checked by a professional mechanic. They can test the alternator output and charging system to ensure they are functioning properly.
3. Loose or corroded battery terminals: Check the battery terminals for tightness and signs of corrosion. Loose or corroded terminals can cause voltage issues. Clean the terminals if necessary and ensure they are securely tightened.
4. Wiring or connection issues: Inspect the wiring harness and connections related to the battery, alternator, and charging system. Look for any signs of damage, loose connections, or corrosion. Repair or replace any damaged wiring or connectors as needed.
5. Faulty voltage regulator: The voltage regulator regulates the charging voltage from the alternator. If the voltage regulator is faulty, it may result in abnormal system voltage. A professional mechanic should perform diagnostic tests to identify and replace a faulty voltage regulator.

It’s important to note that these are general suggestions, and the specific diagnostic and repair procedures may vary depending on the make, model, and year of your vehicle. If you are unsure or uncomfortable performing these steps yourself, it is recommended to seek assistance from a qualified mechanic or dealership. They will have the expertise and tools to accurately diagnose and resolve the system voltage issue indicated by the P0560:16-48 diagnostic trouble code.