What Does U0163 Mean?
Communication has been lost with the navigation control module, which processes GPS data and route calculations. This differs from the display module and typically indicates a problem with the GPS receiver unit or navigation computer itself.
Common Causes
40%
Failed navigation control module or GPS receiver unit
25%
Damaged antenna cable or GPS antenna failure
20%
Corroded connector or wiring issue at navigation module
10%
Loss of power supply to navigation control module
5%
CAN bus communication failure between navigation and other modules
Diagnostic Steps
1
Step 1: Locate navigation control module (often separate from display, may be in trunk or under seats)
2
Step 2: Verify power and ground at navigation module connector using multimeter
3
Step 3: Check GPS antenna connection and cable continuity from antenna to module
4
Step 4: Inspect module connector for corrosion, moisture, or damaged terminals
5
Step 5: Test CAN bus signals at module and attempt direct communication with scan tool
Estimated Repair Cost
$250 - $1,200
Parts + labor, varies by vehicle and location
Communication has been lost with the navigation control module, which processes GPS data and route calculations. This differs from the display module and typically indicates a problem with the GPS receiver unit or navigation computer itself.
The most common cause of U0163 (Lost Communication With Navigation Control Module) is: Failed navigation control module or GPS receiver unit
Typical repair costs for U0163 range from $250 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
No direct safety impact. Navigation features will be unavailable but vehicle operates normally. Driver must use alternative navigation methods.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0163 to identify the root cause.
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Quick Info
Category
Network
System
Navigation System
Difficulty
Type
Generic (SAE)
Recommended Tools
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