What Does U016B Mean?
This code range (U016B through U016F) is reserved by ISO/SAE standards for future use. These codes are not currently assigned specific diagnostic meanings and should not appear in normal vehicle operation.
Common Causes
40%
Scan tool error or software displaying undefined codes
25%
Data corruption during code retrieval or transmission
20%
Aftermarket module using non-standard code definitions
10%
Control module software glitch or malfunction
5%
Intermittent communication fault causing misread codes
Diagnostic Steps
1
Step 1: Clear all codes and re-scan with scan tool to verify if code reappears
2
Step 2: Update scan tool software to latest version and attempt code retrieval again
3
Step 3: Try a different professional-grade scan tool to rule out equipment error
4
Step 4: Check for aftermarket modules or equipment that may be generating non-standard codes
5
Step 5: If code persists, contact vehicle manufacturer technical support for clarification on code definition
Estimated Repair Cost
$50 - $200
Parts + labor, varies by vehicle and location
This code range (U016B through U016F) is reserved by ISO/SAE standards for future use. These codes are not currently assigned specific diagnostic meanings and should not appear in normal vehicle operation.
The most common cause of U016B (, U016C, U016D, U016E, U016F ISO/SAE Reserved) is: Scan tool error or software displaying undefined codes
Typical repair costs for U016B range from $50 to $200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
No safety implications. This is likely a diagnostic equipment issue rather than an actual vehicle fault.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U016B to identify the root cause.
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Quick Info
Category
Network
System
Diagnostic System / Communication
Difficulty
Type
Generic (SAE)
Recommended Tools
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