How do you fix a generac generator error code?

Alton Alexander
By Alton AlexanderUpdated on June 4th, 2022

Generac generator error codes are codes that are generated by the Generac generator when it detects an error. These codes help the user to troubleshoot the problem and fix it. There are many different error codes that can be generated by the Generac generator, and each code represents a different problem. Some of the most common error codes are E04, E05, and E06. These codes represent errors with the fuel system, the electrical system, and the engine, respectively.

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1. Check the oil level and add oil if needed

  1. Verify the engine is turning over by pressing the start button and observing the engine light turn on.
  2. Check the oil level by looking at the dipstick. If the oil level is low, add oil according to the manufacturer’s instructions.
  3. Reset the engine error code. To do this, disconnect the battery, wait five minutes, and reconnect the battery. If the problem persists, take the generator to a service center.

2. Clean or replace the spark plugs

  1. Disconnect the spark plug wires from the spark plugs.
  2. Clean the spark plug gap using a spark plug gap tool.
  3. Reinstall the spark plugs using the correct torque specifications.
  4. Reconnect the spark plug wires to the spark plugs.

3. Clean the air filter

  1. Open the cover of the filter housing and remove the filter.
  2. Clean the filter with a brush or a soft cloth.
  3. Reinstall the filter in the housing.
  4. Close the cover of the housing.

4. Check the fuel level and add fuel if needed

  1. Verify the fuel level is correct.
  2. If the fuel level is correct, check the electrical connection between the generator and the power source.
  3. If the electrical connection is correct, check the fuses.
  4. If the fuses are correct, check the generator control panel.
  5. If the generator control panel is correct, check the generator wiring.

5. Check the battery and charge if needed

The steps to check the battery and charge if needed in order to fix generac generator error codes depend on the error code. To check the error code, follow these steps:

  1. Disconnect the battery cables.
  2. Check the battery voltage.
  3. Check the battery amperage.
  4. Check the generator voltage.
  5. Check the generator amperage.
  6. Check the lights.
  7. Reconnect the battery cables.
  8. Reconnect the generator cables.
  9. Start the generator.
  10. Check the error code again.

Some users might also have success with the following opitons:

  1. Inspect the engine for any loose or damaged parts.
  2. Check the cooling system and add coolant if needed.
  3. Call a qualified technician for further diagnosis and repairs.