u1144 u1144 module communication failure

OBD2 Code: U1144

Description: Module Communication Failure

Definition: The OBD-II code U1144 indicates a loss of communication with a specific control module in the vehicle. This can be due to wiring issues, faulty modules, or network problems within the vehicle’s communication system.

: Module Communication Failure – Severity: Moderate

Common Causes

Common causes:
– Faulty module communication circuit
– Loose or corroded electrical connections
– Defective module or control unit

 

Common Misdiagnosis

Description: U1144 Module Communication Failure

Common Misdiagnosis: Faulty wiring or connectors are often misdiagnosed as a module failure.

 

Common Diagnostic Steps

OBD2 Code: U1144
Description: Module Communication Failure
Common Diagnostic Steps:

• Check for any other stored codes that might indicate a related issue.
• Inspect the wiring and connectors associated with the module for damage or corrosion.
• Verify power and ground connections to the affected module.
• Use a scan tool to check for communication between modules on the network.
• If equipped, perform a network integrity test using an appropriate diagnostic tool.
• Update or reprogram the module’s software if necessary and available from the manufacturer.
• If all else fails, consider replacing the faulty module after confirming it is defective.