What Does U1158 Mean?
The antenna module is not communicating on the SCP network. This affects vehicles with powered or amplified antenna systems that require network communication for operation.
Common Causes
35%
Failed antenna amplifier or module
30%
Damaged or disconnected antenna wiring harness
20%
Power or ground circuit fault to antenna module
10%
Broken or damaged antenna mast affecting module
5%
SCP bus communication line damage
Diagnostic Steps
1
Step 1: Verify antenna module has proper power and ground using DVOM
2
Step 2: Check antenna fuse in fuse panel
3
Step 3: Inspect antenna connector at base or in fender area for corrosion or damage
4
Step 4: Test antenna amplifier signal output if equipped with powered antenna
5
Step 5: Replace antenna module or amplifier if circuits are verified good
Estimated Repair Cost
$100 - $400
Parts + labor, varies by vehicle and location
The antenna module is not communicating on the SCP network. This affects vehicles with powered or amplified antenna systems that require network communication for operation.
The most common cause of U1158 (SCP (J1850) Invalid or Missing Data for Antenna) is: Failed antenna amplifier or module
Typical repair costs for U1158 range from $100 to $400, depending on the vehicle, location, and whether you do it yourself or go to a shop.
No safety impact. Only affects radio reception quality and antenna operation.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U1158 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Network
System
Audio/Entertainment System
Difficulty
Type
Manufacturer
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
