u1145 u1145 module communication failure
OBD2 Code: U1145
Description: Module Communication Failure
Definition: The OBD-II code U1145 indicates a loss of communication with one or more modules on the vehicle’s network. This can be due to wiring issues, faulty modules, or network problems that prevent proper data exchange between control units.
Severity: Moderate
Common Causes
Common causes:
– Faulty module communication circuit
– Loose or corroded connections in the communication network
– Defective module or control unit
Common Misdiagnosis
Description: Module Communication Failure
Common Misdiagnosis: Faulty wiring or connectors are often misdiagnosed as a failed module.
Description: Module Communication Failure
Common Misdiagnosis: Incorrectly replacing the control module without checking for network issues.
Common Diagnostic Steps
Description: Module Communication Failure
Common Diagnostic Steps:
- Check for any other stored trouble codes that might indicate a related issue.
- Inspect the wiring and connectors associated with the communication network for damage or corrosion.
- Verify that all modules are receiving proper power and ground connections.
- Use a scan tool to check the communication status between modules.
- If possible, update or reprogram the affected module(s) with the latest software version.
- If necessary, replace any faulty modules after confirming they are not communicating properly.