DTC Code 06473 – What does this code mean for Volkswagen?

<ul> <li><b>Overheating Engine</b>: The engine may overheat due to the radiator fan not functioning properly. This can be caused by a defective control unit 2 for the radiator fan.</li> <li><b>Radiator Fan Not Operating</b>: The radiator fan may not turn on, leading to inadequate cooling of the engine. This is directly linked to a defective control unit 2 for the radiator fan.</li> <li><b>Check Engine Light</b>: The check engine light may illuminate on the dashboard, indicating an issue with the radiator fan control unit 2.</li> <li><b>Reduced Air Conditioning Performance</b>: The air conditioning system may not perform optimally due to the radiator fan not operating correctly, which can be traced back to a defective control unit 2.</li> </ul>

<ul><li>The control unit for the radiator fan may have failed due to internal electrical faults.</li><li>Wiring issues such as damaged or corroded connectors can disrupt communication with the control unit.</li><li>A blown fuse or relay associated with the radiator fan control circuit can cause this error.</li><li>Software issues or outdated firmware in the vehicle's ECU might lead to improper control unit operation.</li><li>Overheating or physical damage to the control unit from external factors can result in malfunction.</li></ul>

<ul> <li><b>Initial Scan</b>: Perform a full system scan using a diagnostic tool to confirm the presence of DTC 06473 and check for any other related codes.</li> <li><b>Visual Inspection</b>: Inspect the radiator fan control unit 2 for any visible signs of damage, corrosion, or loose connections.</li> <li><b>Check Wiring and Connectors</b>: Examine the wiring harness and connectors leading to the control unit for any signs of wear, fraying, or disconnection.</li> <li><b>Test Power Supply</b>: Verify that the control unit is receiving the correct voltage by using a multimeter to check the power supply at the unit's connector.</li> <li><b>Control Unit Functionality Test</b>: Use a diagnostic tool to activate the radiator fan through the control unit and observe its operation. Ensure the fan responds correctly to commands.</li> <li><b>Check Ground Connections</b>: Ensure that the ground connections for the control unit are secure and free of corrosion. Measure resistance to confirm a good ground.</li> <li><b>Replace Control Unit</b>: If all previous steps are satisfactory and the issue persists, replace the radiator fan control unit 2 and clear the DTC code. Re-test the system to confirm the repair.</li></ul>

<p>The DTC 06473 indicates that Control Unit 2 for the radiator fan in a Volkswagen vehicle is defective. This issue can lead to improper cooling of the engine, especially under high load or in hot weather conditions.</p><ul><li><b>Immediate Actions:</b> Inspect and replace the defective control unit.</li><li><b>Potential Risks:</b> Delayed repair can cause engine overheating, leading to severe engine damage.</li></ul>