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Home / DTC / U0264 — Lost Communication With Camera Module - Rear

U0264 — Lost Communication With Camera Module - Rear

Detailed page for trouble code U0264.

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22,491specific
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Code

U0264

Generic U — Network/User

Lost Communication With Camera Module - Rear

Brand: Generic
Type: U — Network/User
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Blown fuse or missing power/ground to rear camera module
  • Damaged or corroded camera connector or wiring harness (open, short to ground, short to battery)
  • Faulty rear camera module (internal failure)
  • CAN/LAN network fault: open circuit, short, missing termination, or high error rate
  • Gateway/module software mismatch or module not awake (sleep/wake issue)
  • Water intrusion or physical damage to camera or cable

Symptoms

  • Rear camera image unavailable on display or intermittent video
  • Dashboard message or warning about rear camera unavailable
  • Other modules report communication errors related to rear camera
  • Possible intermittent operation of reverse-assist features (parking aid, cross-traffic alert)
  • Stored U0264 and possibly additional U-codes for related modules

What to check

  • Read all stored and pending DTCs from all modules and note freeze frame data
  • Verify battery voltage is stable (12.4–12.8 V with key on; >11 V during cranking)
  • Inspect fuses and related power/ignition circuits for the camera
  • Visually inspect rear camera, connector, and harness for corrosion, damage, moisture, or broken pins
  • Backprobe camera connector: check for key-on power and good ground
  • Use a scan tool to request camera module data/alive messages; verify presence/absence of expected PIDs or video stream

Signal parameters

  • Power supply to camera: expected battery voltage with ignition on (approx. 11–14 V)
  • Ground: near 0 V at camera chassis/ground pin
  • High-speed CAN idle voltages: CAN_H ≈ 2.5 V, CAN_L ≈ 2.5 V (recessive). Dominant state: CAN_H ≈ 3.5 V, CAN_L ≈ 1.5 V (values vary slightly by manufacturer)
  • Differential CAN_H–CAN_L idle ≈ 0 V; dominant differential ≈ 2 V
  • Expected message/heartbeat rate: camera alive/heartbeat messages typically 1–10 Hz; video frame/data rates higher (manufacturer specific)
  • Termination resistance across CAN_H and CAN_L ≈ 60 Ω (two 120 Ω in parallel)

Diagnostic algorithm

  1. Record active and pending codes from all modules. Note any related U-codes. Clear codes only after documenting.
  2. Confirm battery voltage and health. Perform tests with known-good battery or charger to avoid low-voltage related communication faults.
  3. Inspect fuses and verify power/ground at camera connector with key on and engine off. Repair any blown fuse or bad ground.
  4. Visually inspect camera, lens, connector, and harness for physical or water damage. Repair or secure loose connections.
  5. With a scan tool, attempt to communicate with the rear camera module. Check for module ID, serial, and streaming/data PIDs. Note if module does not respond to requests.
  6. Backprobe and measure CAN_H and CAN_L at the camera connector and at the gateway while attempting communication. Look for expected idle and active voltages and message activity. Use a scope to see noise or errors.
  7. Check termination resistance between CAN_H and CAN_L near the camera circuit and at the gateway (~60 Ω). If termination missing or wrong value, trace and repair.
  8. If wiring appears suspect, perform continuity and short tests between camera pins and gateway/BCM pins. Repair damaged wiring or connectors. Use shielded/paired wire repair methods and maintain service loop where required.
  9. If wiring and power/grounds are good but no communication, try swapping or bench-testing camera with a known-good unit if available, or temporarily route a known-good camera to verify network behavior.
  10. Check for module software updates or calibration notices for the camera or gateway. Apply software/firmware updates per manufacturer guidance.
  11. After repairs, clear codes and confirm normal operation: camera image present, no U0264 or related codes, and reverse-assist functions operate normally. Road-test and re-check network health.

Likely causes

  • Missing power or ground at the camera (blown fuse, poor ground)
  • Broken or corroded connector/harness at the camera (water damage common on rear cameras)
  • Faulty rear camera module
  • CAN bus wiring damaged between camera and gateway (open/short/intermittent)
  • Network gateway/module not routing messages or module software fault

Fault status

⚠️ Status
U0264 - Lost Communication With Camera Module: Rear (rear camera not responding on vehicle network)
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-2.5 hours

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Code

U0264

HYUNDAI U — Network/User

Lost Communication With Camera Module Rear

Brand: HYUNDAI
Type: U — Network/User
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Blown fuse or missing power/ground to rear camera module
  • Damaged or corroded camera connector or wiring harness (open, short to ground, short to battery)
  • Faulty rear camera module (internal failure)
  • CAN/LAN network fault: open circuit, short, missing termination, or high error rate
  • Gateway/module software mismatch or module not awake (sleep/wake issue)
  • Water intrusion or physical damage to camera or cable

Symptoms

  • Rear camera image unavailable on display or intermittent video
  • Dashboard message or warning about rear camera unavailable
  • Other modules report communication errors related to rear camera
  • Possible intermittent operation of reverse-assist features (parking aid, cross-traffic alert)
  • Stored U0264 and possibly additional U-codes for related modules

What to check

  • Read all stored and pending DTCs from all modules and note freeze frame data
  • Verify battery voltage is stable (12.4–12.8 V with key on; >11 V during cranking)
  • Inspect fuses and related power/ignition circuits for the camera
  • Visually inspect rear camera, connector, and harness for corrosion, damage, moisture, or broken pins
  • Backprobe camera connector: check for key-on power and good ground
  • Use a scan tool to request camera module data/alive messages; verify presence/absence of expected PIDs or video stream

Signal parameters

  • Power supply to camera: expected battery voltage with ignition on (approx. 11–14 V)
  • Ground: near 0 V at camera chassis/ground pin
  • High-speed CAN idle voltages: CAN_H ≈ 2.5 V, CAN_L ≈ 2.5 V (recessive). Dominant state: CAN_H ≈ 3.5 V, CAN_L ≈ 1.5 V (values vary slightly by manufacturer)
  • Differential CAN_H–CAN_L idle ≈ 0 V; dominant differential ≈ 2 V
  • Expected message/heartbeat rate: camera alive/heartbeat messages typically 1–10 Hz; video frame/data rates higher (manufacturer specific)
  • Termination resistance across CAN_H and CAN_L ≈ 60 Ω (two 120 Ω in parallel)

Diagnostic algorithm

  1. Record active and pending codes from all modules. Note any related U-codes. Clear codes only after documenting.
  2. Confirm battery voltage and health. Perform tests with known-good battery or charger to avoid low-voltage related communication faults.
  3. Inspect fuses and verify power/ground at camera connector with key on and engine off. Repair any blown fuse or bad ground.
  4. Visually inspect camera, lens, connector, and harness for physical or water damage. Repair or secure loose connections.
  5. With a scan tool, attempt to communicate with the rear camera module. Check for module ID, serial, and streaming/data PIDs. Note if module does not respond to requests.
  6. Backprobe and measure CAN_H and CAN_L at the camera connector and at the gateway while attempting communication. Look for expected idle and active voltages and message activity. Use a scope to see noise or errors.
  7. Check termination resistance between CAN_H and CAN_L near the camera circuit and at the gateway (~60 Ω). If termination missing or wrong value, trace and repair.
  8. If wiring appears suspect, perform continuity and short tests between camera pins and gateway/BCM pins. Repair damaged wiring or connectors. Use shielded/paired wire repair methods and maintain service loop where required.
  9. If wiring and power/grounds are good but no communication, try swapping or bench-testing camera with a known-good unit if available, or temporarily route a known-good camera to verify network behavior.
  10. Check for module software updates or calibration notices for the camera or gateway. Apply software/firmware updates per manufacturer guidance.
  11. After repairs, clear codes and confirm normal operation: camera image present, no U0264 or related codes, and reverse-assist functions operate normally. Road-test and re-check network health.

Likely causes

  • Missing power or ground at the camera (blown fuse, poor ground)
  • Broken or corroded connector/harness at the camera (water damage common on rear cameras)
  • Faulty rear camera module
  • CAN bus wiring damaged between camera and gateway (open/short/intermittent)
  • Network gateway/module not routing messages or module software fault

Fault status

⚠️ Status
U0264 - Lost Communication With Camera Module: Rear (rear camera not responding on vehicle network)
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-2.5 hours

Similar codes

U0100 U0121 U0140 U0155 U0263
371

Browse 371 HYUNDAI manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

HYUNDAI

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+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email
Code

U0264

LAND ROVER U — Network/User

Lost communication with the rear camera module

Brand: LAND ROVER
Type: U — Network/User
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Blown fuse or missing power/ground to rear camera module
  • Damaged or corroded camera connector or wiring harness (open, short to ground, short to battery)
  • Faulty rear camera module (internal failure)
  • CAN/LAN network fault: open circuit, short, missing termination, or high error rate
  • Gateway/module software mismatch or module not awake (sleep/wake issue)
  • Water intrusion or physical damage to camera or cable

Symptoms

  • Rear camera image unavailable on display or intermittent video
  • Dashboard message or warning about rear camera unavailable
  • Other modules report communication errors related to rear camera
  • Possible intermittent operation of reverse-assist features (parking aid, cross-traffic alert)
  • Stored U0264 and possibly additional U-codes for related modules

What to check

  • Read all stored and pending DTCs from all modules and note freeze frame data
  • Verify battery voltage is stable (12.4–12.8 V with key on; >11 V during cranking)
  • Inspect fuses and related power/ignition circuits for the camera
  • Visually inspect rear camera, connector, and harness for corrosion, damage, moisture, or broken pins
  • Backprobe camera connector: check for key-on power and good ground
  • Use a scan tool to request camera module data/alive messages; verify presence/absence of expected PIDs or video stream

Signal parameters

  • Power supply to camera: expected battery voltage with ignition on (approx. 11–14 V)
  • Ground: near 0 V at camera chassis/ground pin
  • High-speed CAN idle voltages: CAN_H ≈ 2.5 V, CAN_L ≈ 2.5 V (recessive). Dominant state: CAN_H ≈ 3.5 V, CAN_L ≈ 1.5 V (values vary slightly by manufacturer)
  • Differential CAN_H–CAN_L idle ≈ 0 V; dominant differential ≈ 2 V
  • Expected message/heartbeat rate: camera alive/heartbeat messages typically 1–10 Hz; video frame/data rates higher (manufacturer specific)
  • Termination resistance across CAN_H and CAN_L ≈ 60 Ω (two 120 Ω in parallel)

Diagnostic algorithm

  1. Record active and pending codes from all modules. Note any related U-codes. Clear codes only after documenting.
  2. Confirm battery voltage and health. Perform tests with known-good battery or charger to avoid low-voltage related communication faults.
  3. Inspect fuses and verify power/ground at camera connector with key on and engine off. Repair any blown fuse or bad ground.
  4. Visually inspect camera, lens, connector, and harness for physical or water damage. Repair or secure loose connections.
  5. With a scan tool, attempt to communicate with the rear camera module. Check for module ID, serial, and streaming/data PIDs. Note if module does not respond to requests.
  6. Backprobe and measure CAN_H and CAN_L at the camera connector and at the gateway while attempting communication. Look for expected idle and active voltages and message activity. Use a scope to see noise or errors.
  7. Check termination resistance between CAN_H and CAN_L near the camera circuit and at the gateway (~60 Ω). If termination missing or wrong value, trace and repair.
  8. If wiring appears suspect, perform continuity and short tests between camera pins and gateway/BCM pins. Repair damaged wiring or connectors. Use shielded/paired wire repair methods and maintain service loop where required.
  9. If wiring and power/grounds are good but no communication, try swapping or bench-testing camera with a known-good unit if available, or temporarily route a known-good camera to verify network behavior.
  10. Check for module software updates or calibration notices for the camera or gateway. Apply software/firmware updates per manufacturer guidance.
  11. After repairs, clear codes and confirm normal operation: camera image present, no U0264 or related codes, and reverse-assist functions operate normally. Road-test and re-check network health.

Likely causes

  • Missing power or ground at the camera (blown fuse, poor ground)
  • Broken or corroded connector/harness at the camera (water damage common on rear cameras)
  • Faulty rear camera module
  • CAN bus wiring damaged between camera and gateway (open/short/intermittent)
  • Network gateway/module not routing messages or module software fault

Fault status

⚠️ Status
U0264 - Lost Communication With Camera Module: Rear (rear camera not responding on vehicle network)
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-2.5 hours

Similar codes

U0100 U0121 U0140 U0155 U0263
280

Browse 280 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

LAND ROVER

Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email

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