how to fix B0418 code in Honda Accord 9th Generation (2013-2017)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety while working on electrical components.

2. Inspect and Replace A/C Refrigerant Temperature Sensor

• Tools Required: Socket set, wrench set, multimeter, A/C manifold gauge set.
• Locate the A/C refrigerant temperature sensor, usually found on the A/C line near the compressor.
• Disconnect the wiring harness from the temperature sensor.
• Use a socket to remove the old sensor from the A/C line.
• Install the new A/C refrigerant temperature sensor by threading it into place and tightening to the manufacturer’s specifications (typically 20 ft-lbs).
• Reconnect the wiring harness securely.

3. Recharge A/C System

• Connect the A/C manifold gauges to the high and low-pressure service ports.
• Evacuate the A/C system using a vacuum pump for at least 30 minutes to remove any moisture.
• Recharge the A/C system with the correct type and amount of refrigerant as specified in the owner's manual (usually R134a, approximately 1.5-2.0 lbs).
• Check for proper pressure readings on the manifold gauges while the A/C is running.

4. Final Checks

• Reconnect the battery.
• Start the vehicle and run the A/C to verify proper operation.
• Monitor the A/C system for any unusual noises or leaks.