What Does U0233 Mean?
The control module responsible for detecting obstacles on the right side of the vehicle is not communicating on the vehicle network. This affects parking assistance and blind spot detection features on the passenger side.
Common Causes
35%
Faulty right side obstacle detection module or internal failure
30%
Damaged or corroded wiring harness and connectors to right side sensor
20%
Loss of power or ground to the obstacle detection module
10%
CAN bus network fault or termination resistance issue
5%
Software corruption or module programming issue
Diagnostic Steps
1
Step 1: Check for power and ground at the right obstacle detection module connector using a multimeter
2
Step 2: Inspect the wiring harness and connectors for physical damage, corrosion, or loose connections
3
Step 3: Measure CAN bus voltage between CAN High and CAN Low at the module connector (should be approximately 2.5V with key on)
4
Step 4: Monitor live data to verify if other modules are communicating on the same CAN bus network
5
Step 5: Test the obstacle detection module by swapping with left side module if identical, or replace and reprogram if faulty
Estimated Repair Cost
$150 - $800
Parts + labor, varies by vehicle and location
The control module responsible for detecting obstacles on the right side of the vehicle is not communicating on the vehicle network. This affects parking assistance and blind spot detection features on the passenger side.
The most common cause of U0233 (Lost Communication With Right Side Obstacle Detection Control Module) is: Faulty right side obstacle detection module or internal failure
Typical repair costs for U0233 range from $150 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Parking assistance and blind spot monitoring on the right side will be disabled. Exercise extra caution when parking or changing lanes to the right.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0233 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Network
System
Parking Assistance/Driver Assistance Systems
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
