U1106 Code - Invalid Or Missing Data For Legislated Diagnostics
Quick Answer
Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Common causes include Faulty Module that is not communicating, Module harness is open or shorted, Module circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- U1106 indicates Invalid Or Missing Data For Legislated Diagnostics.
- Common causes
- Common causes include Faulty Module that is not communicating, Module harness is open or shorted, Module circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code U1106 Description
What are the Possible Causes of the DTC U1106?
- Faulty Module that is not communicating
- Module harness is open or shorted
- Module circuit poor electrical connection
How to Fix the DTC U1106?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the U1106 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about U1106 Code
1. What does the OBDII code U1106 mean?
The U1106 code indicates that a module has detected invalid or missing data for legislated diagnostics, often due to communication issues between control modules.
2. What are the common symptoms of code U1106?
Symptoms may include the Check Engine Light being illuminated, reduced engine performance, erratic transmission behavior, or a lack of communication with certain modules.
3. What causes the U1106 code to appear?
Common causes include faulty wiring, a damaged or loose connector, a failed control module, or interference in the communication network.
4. Can I drive my vehicle with a U1106 code?
It is possible to drive with this code, but it’s not recommended as it can lead to further issues with vehicle performance or safety systems.
5. How is the U1106 code diagnosed?
A technician will use a scan tool to check for additional codes, inspect wiring and connectors, and test the communication network between modules.
6. What repairs can fix the U1106 code?
Repairs may include fixing or replacing damaged wiring, cleaning or reconnecting loose connectors, reprogramming or replacing a faulty control module, or addressing network interference.
7. Can a weak battery cause the U1106 code?
Yes, a weak or failing battery can disrupt module communication and trigger this code. Ensuring the battery is in good condition is essential.
8. Is the U1106 code specific to one manufacturer?
No, the U1106 code is a generic OBDII code, but the exact diagnostic process and affected systems may vary by vehicle make and model.
9. How much does it cost to repair the U1106 code?
Repair costs vary widely depending on the root cause, ranging from $50 for a simple wiring fix to several hundred dollars for module replacement.
10. Can I clear the U1106 code without fixing the issue?
While you can clear the code with a scan tool, it will likely return unless the underlying issue is resolved.
Discuss the causes and fixes for U1106 OBDII Code
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