u1090 control module communication failure
OBD2 Code: U1090
Description: Control Module Communication Failure
Definition: This code indicates that there is a loss of communication between the vehicle’s control modules. The specific module experiencing the issue may vary depending on the vehicle make and model, but it generally refers to a disruption in data exchange necessary for proper operation.
U1090: Control module communication failure – typical severity: Moderate
Common Causes
U1090 – Control Module Communication Failure
Common Causes:
- Faulty control module
- Wiring or connection issues between the control module and other components
- Interference from other electronic devices
- Software or programming errors in the control module
Common Misdiagnosis
OBD2 Code: U1090
Description: Control Module Communication Failure
Common Misdiagnosis: Replacing the control module without checking for wiring issues or network problems.
Common Diagnostic Steps
OBD2 Code: U1090
Description: Control Module Communication Failure
- Check for any other stored codes that may indicate a specific module failure.
- Inspect the wiring and connectors related to the communication network for damage or corrosion.
- Verify the integrity of the ground connections for all control modules involved.
- Use a scan tool to check for communication between modules on the network.
- Perform a voltage drop test on the power and ground circuits of affected modules.
- If equipped, inspect and test fuses related to the communication system.
- Consult vehicle-specific repair information for additional diagnostic steps or known issues related to this code.