U0264: Lost Communication With Camera Module Rear

What it means

A control module has stopped receiving expected messages from the rear camera module. The code identifies the communication loss; camera functions may be affected if equipped.

How it works

The rear camera module sends video-system status and related messages to the vehicle network so the display system can provide the rear-camera view. U0264 sets when another module stops receiving expected messages from the rear camera module; it can indicate a communication fault even if the camera lens or display appears intact.

Common causes

Most likely first.

1. Bus wiring open or shorted
2. Module without power or ground
3. Module failed

Symptoms

• Rear camera functions may be unavailable
• A warning may appear depending on the vehicle

How to diagnose it

1. Scan all modules and check whether U0264 is current, noting related display, parking-assist, network, or low-voltage codes.
2. With the vehicle safely stationary, check whether the rear-camera image is missing and whether the camera module responds to a scan tool.
3. Inspect the rear camera module's connector and accessible wiring for water entry, corrosion, impact damage, or a loose connection.
4. Check the module's power and ground circuits according to the manufacturer's wiring information.
5. If supplies are correct, test the bus wiring to the rear camera module for an open or short before replacing the module.

Common fixes

• Reconnect or clean a poor connection at the rear camera module.
• Repair damaged or water-affected wiring to the module.
• Restore a failed power or ground supply.
• Replace and configure the rear camera module if its circuits test correctly but it does not communicate.

Can I keep driving?

If the rear camera view is unavailable, use mirrors and look around carefully when reversing; do not rely on the camera or its parking guidance. The communication fault usually does not affect normal forward driving.