u1085 u1085 control module communication failure

OBD2 Code: U1085

Description: Control Module Communication Failure

Definition: This code indicates a loss of communication between the vehicle’s control modules, which can affect various systems and functions within the vehicle. It typically points to issues with wiring, connectors, or the network that connects these modules.

: Control Module Communication Failure – Severe
: Control Module Communication Failure – Severe

Common Causes

Control Module Communication Failure
– Common Causes:
– Faulty control module
– Wiring issues between control module and other components
– Poor electrical connection to the control module

 

Common Misdiagnosis

OBD2 Code: U1085
Description: Control Module Communication Failure
Common Misdiagnosis: Faulty control module replacement without checking for wiring issues or connector problems.

 

Common Diagnostic Steps

OBD2 Code: U1085
Description: Control Module Communication Failure
Common Diagnostic Steps:

• Check for any other stored codes that may indicate a related issue.
• Inspect the wiring and connectors for damage, corrosion, or loose connections in the communication circuit.
• Verify the power and ground supply to the control module are within specifications.
• Use a scan tool to check for proper communication between modules on the network.
• If equipped, perform a network integrity test using an appropriate diagnostic tool.
• Consult the vehicle’s service manual for specific troubleshooting procedures related to this code.
• If necessary, replace or reprogram the affected control module following manufacturer guidelines.