how to fix B10C3 code in my Volkswagen Passat B8 (2015-2022) climate control system

Solution

1. Preparation

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

2. Inspect and Replace Refrigerant

• Tools Required: A/C gauge set, refrigerant
• Check the refrigerant level using the A/C gauge set.
• If low, recharge the system with the correct type and amount of refrigerant as specified in the owner’s manual.
• Monitor the system for proper operation after recharge.

3. Replace Refrigerant Pressure Sensor

• Tools Required: Socket set, torque wrench, and A/C line disconnect tool
• Locate the refrigerant pressure sensor on the A/C line.
• Disconnect the electrical connector and remove the sensor using the socket set.
• Install the new sensor and tighten it to the manufacturer’s specified torque value.
• Reconnect the electrical connector.

4. Inspect and Repair Wiring

• Tools Required: Multimeter, electrical repair kit
• Use the multimeter to check continuity and voltage in the wiring harness connected to the climate control module.
• Repair any damaged wires or connections as necessary using the electrical repair kit.

5. Reset the Climate Control System

• Reconnect the battery and use the OBD-II scanner to clear the B10C3 code.
• Perform a system reset by following the vehicle-specific procedure (refer to the repair manual).