U1111 Infiniti Code - Lost Communication With Chassis Control Module
Quick Answer
The Diagnostic Trouble Code (DTC) sets when the ignition switch is ON, Transmission Control Module (TCM) is unable to receive the Controlled Area Network (CAN) communications signal from Chassis Control Module continuously for 2 seconds or more. Common causes include Faulty Chassis Control Module, Chassis Control Module harness is open or shorted, Chassis Control 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
- U1111 Infiniti indicates Lost Communication With Chassis Control Module.
- Common causes
- Common causes include Faulty Chassis Control Module, Chassis Control Module harness is open or shorted, Chassis Control 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 U1111 Infiniti Description
What are the Possible Causes of the DTC U1111 Infiniti?
- Faulty Chassis Control Module
- Chassis Control Module harness is open or shorted
- Chassis Control Module circuit poor electrical connection
How to Fix the DTC U1111 Infiniti?
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 U1111 Infiniti 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 U1111 Infiniti Code
1. What are the common symptoms of OBDII code U1111 in an Infiniti related to lost communication with the chassis control module?
- Common symptoms include the malfunction indicator light (MIL) illuminated on the dashboard, issues with ABS, traction control, or stability control systems, and potential loss of communication with the chassis control module.
2. What are some possible causes for the U1111 code in an Infiniti indicating lost communication with the chassis control module?
- Causes can include damaged wiring or connectors, a faulty chassis control module, a bad communication network, software issues, or a malfunctioning CAN bus system.
3. How can I diagnose the U1111 code in my Infiniti if I suspect a problem with the chassis control module communication?
- Proper diagnosis involves using an OBDII scanner to retrieve the code, checking for any other related codes, inspecting wiring and connectors for damage, and performing communication tests on the affected modules.
4. Are there any repair tips for fixing the U1111 code in an Infiniti due to lost communication with the chassis control module?
- Repair tips may include repairing or replacing damaged wiring or connectors, reprogramming the chassis control module if necessary, checking and fixing any communication network issues, and ensuring all modules are properly communicating.
5. Can a DIY enthusiast resolve the U1111 code related to lost communication with the chassis control module in an Infiniti?
- While basic checks like inspecting connectors can be done by a DIY enthusiast, diagnosing and repairing complex issues with the chassis control module may require specialized tools and expertise, so professional assistance is recommended.
6. How critical is it to address the U1111 code indicating lost communication with the chassis control module in an Infiniti promptly?
- It is important to address the U1111 code promptly as it can affect the proper functioning of safety systems like ABS, traction control, and stability control, potentially compromising vehicle safety.
7. Can resetting the OBDII code U1111 related to lost communication with the chassis control module in an Infiniti resolve the issue permanently?
- Simply resetting the code may temporarily clear the MIL, but if the underlying communication problem persists, the code is likely to return. Proper diagnosis and repair are needed for a permanent solution.
8. How much can I expect to pay for repairing the U1111 code due to lost communication with the chassis control module in an Infiniti?
- Repair costs can vary based on the specific issue, labor rates, and parts needed. It's advisable to consult with a professional technician for a more accurate estimate based on your vehicle's condition.
9. Are there any recalls or technical service bulletins related to the U1111 code in an Infiniti that I should be aware of?
- It's recommended to check with the manufacturer or a dealership for any recalls or technical service bulletins related to the U1111 code and lost communication with the chassis control module in your specific Infiniti model.
10. Can weather conditions or environmental factors contribute to triggering the U1111 code indicating lost communication with the chassis control module in an Infiniti?
- Extreme weather conditions, water exposure, or environmental factors like corrosion can potentially impact the communication network and lead to the U1111 code. Inspecting and protecting the wiring and connectors can help prevent such issues.
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