U058C: Invalid Data Received From Active Grille Air Shutter Control Module C

What it means

A receiving control module has detected invalid data from Active Grille Air Shutter Control Module C. The code does not specify which data is invalid or why.

How it works

The active grille air shutter system moves shutters to manage airflow through the front of the vehicle. Other modules receive operating data from shutter control module C over the vehicle network and set U058C when that data fails a validity check; the code alone does not identify the bad value or its cause.

Common causes

Most likely first.

1. Module internal fault or sensor input drift
2. Software version mismatch after replacement
3. Gateway module routing CAN messages incorrectly

Symptoms

• Multiple warning lights may illuminate
• Affected modules may go into limp mode or shut down
• Specific functions inoperative depending on module
• Diagnostic tools may show communication faults

How to diagnose it

1. Scan all modules and save freeze-frame and communication-code details to see which module reported U058C and when it occurred.
2. Check the vehicle’s battery and charging condition, since unstable module power can disrupt network data.
3. Inspect the grille shutters, shutter module C connectors, and nearby wiring for damage, water, loose pins, or poor repairs.
4. Use a capable scan tool to compare module C status and reported shutter data with other available vehicle data, looking for missing or implausible values.
5. Check network and gateway codes and test the relevant communication wiring using the manufacturer’s diagnostic procedure.
6. If the fault began after module replacement or software work, verify the correct configuration and software compatibility before condemning a module.

Common fixes

• Repair a loose, corroded, or damaged connector or wire at shutter control module C.
• Correct a weak battery or charging-system problem that is disrupting module communications.
• Clear a shutter obstruction or repair a mechanical problem if it is causing implausible status data.
• Update or configure the replacement module and gateway software to the vehicle’s required versions.
• Replace active grille air shutter control module C if testing confirms an internal fault.

Can I keep driving?

If the vehicle drives normally and has no temperature warning, a short, cautious trip may be possible, but avoid heavy loads or conditions that could cause overheating. Stop if a temperature warning appears or the vehicle limits power, and arrange diagnosis because the shutters may not manage cooling airflow correctly.