U2011 Non-SCP Bus Invalid Data
The U2011 code indicates a communication fault on a non-SCP data bus, such as MS-CAN or LIN. It is triggered when a receiving module detects that the data frame from a transmitting module contains format errors, incorrect checksums, or data outside expected ranges. This is a manufacturer-specific code that requires an advanced scan tool to identify the faulty module.
1. Commonly Affected Makes
2. Most Common Causes
- Internal software or hardware failure in a specific electronic module
- Short circuit or high resistance in the non-SCP bus wiring (MS-CAN or LIN)
- Corroded, bent, or loose pins in the module connector
- Loss of power or ground voltage at the transmitting module
- Electromagnetic interference (EMI) on the communication network
- Recently replaced module without proper programming or as-built data configuration
3. Symptoms You Will Notice
- Check Engine Light or other warning lights illuminated
- Intermittent or complete loss of function from affected modules (e.g., power windows, door locks, radio)
4. Step-by-Step Diagnosis
Connect a manufacturer-level scan tool and retrieve all stored codes and freeze frame data
Inspect the non-SCP bus wiring and connectors for damage, corrosion, or loose connections
Check power and ground circuits at the suspected module
Perform a network test to isolate the module sending invalid data
Verify module programming and configuration if recently replaced
5. Frequently Asked Questions
Is it safe to drive?▼
Yes, but you may experience loss of some convenience features. Have it diagnosed soon to prevent further issues.
How much does it cost to fix?▼
Diagnosis typically costs $100-$200. Repairs range from $150 for a wiring fix to $800+ for module replacement and programming.