how to diagnose low oil pressure warning in Honda Civic 10th Generation (2016-2021)

Solution

1. Preparation

• Gather tools and parts.
• Park the vehicle on a level surface and ensure the engine is cool.

2. Check and Replace Engine Oil

• Sub-steps:
  1. Remove the oil filler cap.
  2. Drain the old oil using a wrench to remove the drain plug; allow the oil to fully drain into a suitable container.
  3. Replace the oil filter using an oil filter wrench; apply a small amount of new oil to the gasket of the new filter before installation.
  4. Reinstall the drain plug and tighten to the manufacturer’s torque specifications (typically around 30 lb-ft).
  5. Refill the engine with the correct type and amount of new oil (typically 0W-20 for the 10th Gen Civic).

3. Replace Oil Pressure Sending Unit

• Tools Required: Socket set, torque wrench
• Sub-steps:
  1. Disconnect the negative battery terminal to avoid electrical shorts.
  2. Locate the oil pressure sending unit, typically found on the engine block.
  3. Disconnect the electrical connector from the sending unit.
  4. Use a socket wrench to remove the old sending unit.
  5. Install the new sending unit and tighten it to the specified torque (usually around 16 lb-ft).
  6. Reconnect the electrical connector.

4. Inspect Oil Pump (if necessary)

• Sub-steps:
  1. If low oil pressure persists, remove the oil pan by loosening the bolts and carefully prying it off.
  2. Inspect the oil pump for wear or damage.
  3. Replace the oil pump if necessary, following the manufacturer’s guidelines for installation.