OBD2 Code U0137: Reserved by SAE J2012
Diagnostic trouble code U0137 is a reserved code under the SAE J2012 standard, meaning it has no publicly assigned functional definition. It falls within the U0000-U03FF range, which covers communication faults on Controller Area Network (CAN) and other vehicle data buses. While the code is reserved for future use or specific applications not documented in the public standard, it may occasionally appear due to a manufacturer-specific proprietary code being misinterpreted by a generic scan tool, or due to a scanner or software compatibility error. This code should not be treated as an active functional diagnostic trouble code.
1. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.
2. Most Common Causes
- Reserved code with no public definition assigned by SAE J2012
- Possible undocumented manufacturer-specific internal use
- Scanner reading error or incompatible diagnostic software
- Proprietary manufacturer code misinterpreted by a generic scan tool
3. Symptoms You Will Notice
- No specific drivability symptoms directly caused by this code
- Check Engine Light may be illuminated if the code is stored
4. Step-by-Step Diagnosis
Verify the code with a professional-grade scan tool to rule out scanner error
Check for other active codes that may indicate a real communication fault
Consult manufacturer-specific service information for any proprietary definitions
Clear the code and re-scan to see if it returns under normal driving conditions
5. Frequently Asked Questions
Is it safe to drive?▼
Yes, it is generally safe to drive because U0137 is a reserved code with no active functional definition. However, if the check engine light is on, it's best to have the vehicle inspected to ensure no other underlying issues exist.
How much does it cost to fix?▼
Since U0137 is a reserved code with no specific repair, costs are minimal—typically $50-$150 for diagnostic time to verify the code and check for other issues. No parts replacement is usually needed.