New Holland ENG 1014 – Engine Control Module (ECM) / Engine ECU: Power-Supply Voltage: Out of Voltage - High

The system voltage has exceeded the maximum safe operating threshold (typically > 16.0V or > 16.5V) while the engine is running. This condition is almost universally caused by an overcharging alternator (due to a failed internal voltage regulator) or a severe ground fault causing the regulator to misread the system voltage.

• L220
• SR175
• B90B
• B100B
• T-series
• TN-series

1. 1

   Perform a static battery test with the engine off (should read around 12.6V)

2. 2

   Perform a running voltage test across the battery terminals (readings above 15V-16V indicate overcharging)

3. 3

   Inspect the battery for signs of boiling, bulging, or a sulfur (rotten egg) smell

4. 4

   Check ground connections between the alternator case, the engine block, and the chassis frame

1. 1

   Disconnect Power

   Disconnect the negative battery cable to ensure safety while working on the electrical system.

2. 2

   Clean All Grounds

   Locate the main heavy ground strap that connects the engine block (often near or under the alternator) to the tractor frame. Remove the connections, wire-brush the terminals and mounting surfaces down to bare metal, and reinstall tightly.

3. 3

   Retest System

   Reconnect the battery, start the engine, and test the voltage again. If the voltage returns to a normal 13.5V - 14.8V range, the bad ground was the issue.

4. 4

   Replace the Alternator

   If the alternator is still pushing 16+ volts after cleaning the grounds, the internal voltage regulator has failed. Replace the alternator assembly (or the voltage regulator, if your specific model allows it to be serviced separately).

5. 5

   Replace the Battery (If Necessary)

   If the battery was subjected to prolonged 16V+ charging, it is likely internally damaged or boiled dry. Load test the battery and replace it if it fails.

6. 6

   Clear Codes

   Use a diagnostic scan tool to clear the ENG 1014 fault code from the ECM.