2008 Lincoln Navigator U0073 and Past U0022 Code Issues: Are They Related?
My 2008 Lincoln Navigator is currently displaying fault code U0073, and I've previously experienced issues with code U0022. I'm wondering if these two codes are related or if they indicate separate problems. The current U0073 suggests a communication error between the vehicle's network and modules. Could the past occurrence of U0022 be connected to this issue?
The U0022 code does not appear to be widely recognized, so it may have been a rare or outdated diagnostic code. The U0073 code indicates a network communication failure between modules. A common cause is aftermarket devices—such as radios, GPS systems, or security trackers—that are not original equipment. It's important to check if any such devices were installed, as they can interfere with the vehicle's onboard network.