What Does U0158 Mean?
Communication has been lost with the head-up display (HUD) module that projects vehicle information onto the windshield. This prevents operation of the convenience display feature.
Common Causes
40%
Faulty head-up display module or projector unit
30%
Damaged wiring harness or connector to HUD module (typically in dash)
15%
CAN bus communication network fault
10%
Power supply or ground circuit failure to HUD module
5%
Software corruption in HUD module or body control module
Diagnostic Steps
1
Step 1: Check if HUD display is completely non-functional or intermittently working
2
Step 2: Locate and inspect HUD module connector (typically accessed through upper dash removal)
3
Step 3: Use scan tool to attempt communication with HUD module and verify module presence on network
4
Step 4: Check power and ground circuits at HUD module with multimeter (verify switched and constant power)
5
Step 5: Test CAN bus signal quality at HUD connector, check for proper voltage levels and resistance
Estimated Repair Cost
$300 - $1,200
Parts + labor, varies by vehicle and location
Communication has been lost with the head-up display (HUD) module that projects vehicle information onto the windshield. This prevents operation of the convenience display feature.
The most common cause of U0158 (Lost Communication With Head Up Display) is: Faulty head-up display module or projector unit
Typical repair costs for U0158 range from $300 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
No direct safety impact as HUD is a convenience feature. Primary instrumentation remains functional. Some drivers may find loss of HUD distracting if accustomed to using it.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0158 to identify the root cause.
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Quick Info
Category
Network
System
Body Control/Information Display
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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