Description:

This error code, EPC 000158.03, is generated when the control unit registers a supply voltage above 16 volts. High supply voltage can indicate an issue with the electrical system, such as a malfunctioning alternator or voltage regulator.

Reaction:

When this error is detected, the control unit may be at risk of damage due to excessive voltage. High voltage can also lead to malfunctioning of other electronic components and systems, affecting the overall performance and reliability of the equipment.

Recommendations:

Check Alternator Output:

• Measure the output voltage of the alternator. Ensure it is within the specified range (typically between 13.5 and 14.5 volts). Replace or repair the alternator if it is overcharging.

Inspect Voltage Regulator:

• Verify the functionality of the voltage regulator. Ensure it is correctly regulating the supply voltage. Replace if it is found to be faulty.

Examine Electrical Connections:

• Check all electrical connections for signs of corrosion, loose connections, or damage. Repair or replace any faulty connections.

Inspect Battery Condition:

• Ensure the battery is in good condition and functioning properly. Overcharging can sometimes be caused by a faulty battery.

Reset and Monitor System:

• After addressing the issues, reset the control unit and monitor the supply voltage to ensure it remains within the normal range.

Note:

Maintaining the electrical system and regularly checking the alternator and voltage regulator can help prevent high voltage issues and ensure the longevity of electronic components.