Honda Civic 10th Generation (2016-2021) HVAC codes B1189 what does it mean

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle battery to prevent electrical shock.
• Ensure the vehicle is on a level surface and the engine is cool.

2. Inspect and Repair Wiring

• Sub-steps:
  • Remove the panels covering the A/C pressure sensor wiring.
  • Visually inspect wiring for any frays, breaks, or corrosion.
  • Repair or replace any damaged wiring or connectors.

3. Replace A/C Pressure Sensor

• Sub-steps:
  • Locate the A/C pressure sensor, typically found on the A/C line near the compressor.
  • Remove the electrical connector from the sensor.
  • Use a wrench to unscrew the old sensor from its mount.
  • Install the new A/C pressure sensor, ensuring it is torqued to manufacturer's specifications (usually around 20 Nm).
  • Reconnect the electrical connector securely.

4. Recharge A/C System

• Sub-steps:
  • Connect an A/C service machine to the vehicle's service ports.
  • Evacuate any remaining refrigerant and moisture from the system.
  • Recharge the system with the correct type and amount of refrigerant (usually R-134a; check the owner's manual for specifics).
  • Start the engine and run the A/C to check for proper operation.