What Does U046B Mean?
The vehicle network is receiving corrupted or implausible data from the GPS (Global Positioning System) module. This affects navigation accuracy, stolen vehicle tracking, telematics functions, and location-based features.
Common Causes
35%
Failed GPS module with damaged antenna circuit or receiver failure
30%
Damaged or disconnected GPS antenna or antenna cable
20%
Corroded connector at GPS module or antenna connection point
10%
Electromagnetic interference from aftermarket electronics or poor shielding
5%
Software corruption or outdated GPS module firmware
Diagnostic Steps
1
Step 1: Verify GPS antenna is properly mounted with clear view of sky; check for aftermarket window tinting blocking signal
2
Step 2: Inspect GPS antenna connector and cable routing for damage, especially at rear window or roof mounting locations
3
Step 3: Using scan tool, monitor GPS module data for number of satellites visible and signal strength quality indicators
4
Step 4: Test antenna circuit continuity and verify proper power supply voltage to GPS module (typically 5V or 12V)
5
Step 5: Check for GPS module software updates; replace GPS module if antenna and wiring test good but data remains invalid
Estimated Repair Cost
$150 - $700
Parts + labor, varies by vehicle and location
The vehicle network is receiving corrupted or implausible data from the GPS (Global Positioning System) module. This affects navigation accuracy, stolen vehicle tracking, telematics functions, and location-based features.
The most common cause of U046B (Invalid Data Received From Global Positioning System Module) is: Failed GPS module with damaged antenna circuit or receiver failure
Typical repair costs for U046B range from $150 to $700, depending on the vehicle, location, and whether you do it yourself or go to a shop.
No direct safety impact on vehicle operation. Navigation features and emergency services location functions (OnStar, etc.) may not work properly.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U046B to identify the root cause.
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Quick Info
Category
Network
System
Navigation / Telematics System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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