The automobile fault code U1099 indicates a problem with the Head-Up Display (HUD) system. The most common symptom is the illumination of the Engine Light or Service Engine Soon Warning Light. The cause of this fault code could be a faulty HUD, an open or shorted HUD harness, or a poor electrical connection in the HUD circuit.

It is important to address this issue promptly as it can affect the accuracy of the display and potentially cause safety concerns.

The repair process involves visually inspecting the wiring harness and connectors for any damage or corrosion. The repair time for this issue is estimated to be around 1.0 hour. To interpret the fault code, it is recommended to check the possible causes listed above and perform a thorough inspection of the related components.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level10.0 (Out of 10)

If you notice the Engine Light ON, it could be a sign of the u1099 fault code.

Here are some symptoms to look out for:

  • The automobile fault code U1099 has the following symptoms: Engine Light ON, Service Engine Soon Warning Light ON.

The automobile fault code u1099 can be caused by a faulty Head-Up Display (HUD), an open or shorted Head-Up Display harness, or poor electrical connection in the Head-Up Display circuit.

  • The automobile fault code U1099 can be caused by a faulty Head-Up Display (HUD).
  • It can also be caused by an open or shorted Head-Up Display harness.
  • Additionally, a poor electrical connection in the Head-Up Display circuit can also trigger this fault code.

To fix the u1099 automobile fault code, check the possible causes and inspect related wiring harness, connectors, and components for damage.

  • To fix the automobile fault code u1099, first, check the possible causes listed above.
  • Then, visually inspect the related wiring harness and connectors.
  • Look for any damaged components and check for broken, bent, pushed out, or corroded connector’s pins.
  • This fix will take an estimated repair time of 1.0 hour.

The automobile fault code U1099 can be diagnosed and fixed within an estimated repair time of 1.0 hour. The cost of repair is influenced by the hourly rate charged by the auto repair shop, which typically ranges between $75 and $150 per hour. Therefore, the total cost of diagnosis and fixing the U1099 fault code will depend on the hourly rate charged by the auto repair shop and the estimated repair time required to fix the issue.

The U1099 code is related to the loss of communication with the Head-Up Display (HUD). Modules in the vehicle monitor for serial data communications during normal operation.

When a module doesn’t receive a message from the HUD for 5 seconds, the U1099 code is set. This code indicates that the module is unable to communicate with the HUD. It is important to diagnose and fix this issue to ensure proper functioning of the HUD.

What are the possible causes of the u1099 automobile fault code?

If you see the engine light on or the service engine soon warning light, it could be due to the u1099 fault code. This code is often caused by a faulty Head-Up Display (HUD), an open or shorted HUD harness, or a poor electrical connection in the HUD circuit. To fix this issue, you should visually inspect the wiring harness and connectors, check for damaged components, and look for broken, bent, pushed out, or corroded connector’s pins.

How can I visually inspect the related wiring harness and connectors to fix the u1099 fault code?

If you’re experiencing the u1099 fault code, which is indicated by the Engine Light ON or Service Engine Soon Warning Light, you may have a faulty Head-Up Display (HUD), an open or shorted Head-Up Display harness, or a poor electrical connection in the Head-Up Display circuit. To fix this issue, you should visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.

What are the signs of damaged components or broken, bent, pushed out, or corroded connector’s pins that I should look for when fixing the u1099 fault code?

If you’re fixing the u1099 fault code, you should look for signs of damaged components or broken, bent, pushed out, or corroded connector’s pins. This fault code is indicated by the engine light being on or the service engine soon warning light. The cause of this fault code could be a faulty Head-Up Display (HUD), an open or shorted Head-Up Display harness, or a poor electrical connection in the Head-Up Display circuit. To fix this issue, you should check the possible causes listed above and visually inspect the related wiring harness and connectors.

u1099 error fault code explained

If your engine light is on, it could be due to a faulty Head-Up Display (HUD), an open or shorted HUD harness, or poor electrical connection.

Check the wiring harness and connectors for damage, broken or corroded pins, and other issues.

Inspect the components and follow the possible causes listed above.

Scroll to Top