OBD Guide
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U2118

Lost Communication With Head-Up Display

U2118 is an OBD-II diagnostic trouble code meaning: Lost Communication With Head-Up Display. Common causes: open or short circuit in head-up display circuit, problem with the head-up display itself. Estimated repair cost: $167–556.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$167–556 (est.)

Symptoms

  • Head-up display not working
  • Intermittent display of information on the HUD
  • Check Engine light comes on
  • Lack of connection with HUD during diagnostics

Causes

  • Open or short circuit in head-up display circuit
  • Problem with the head-up display itself
  • Problems with connectors or wiring harness
  • ECU software error
  • Head-up display power issues

How to Fix

  1. Check the integrity of the circuit and connectors of the projection display
  2. Check the power and ground of the head-up display
  3. Scan the system for other errors
  4. Update ECU software if necessary
  5. Replace the head-up display if a fault is detected

Related codes

U2100U2101U2120

FAQ

What does the U2118 code mean?

U2118 is an OBD-II diagnostic trouble code that indicates: Lost Communication With Head-Up Display

What causes a U2118 error code?

The most common causes of U2118 include: Open or short circuit in head-up display circuit; Problem with the head-up display itself; Problems with connectors or wiring harness; ECU software error.

How do I fix a U2118 diagnostic trouble code?

To fix U2118: Check the integrity of the circuit and connectors of the projection display. Check the power and ground of the head-up display. Scan the system for other errors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U2118?

Yes, but get it checked soon

How much does it cost to fix U2118?

The estimated repair cost for U2118 is $167–556. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat