What Does U023D Mean?
The left front distance range sensor for adaptive cruise control has lost network communication. This radar or ultrasonic sensor monitors the distance to vehicles ahead for adaptive cruise and collision avoidance.
Common Causes
35%
Failed left front distance sensor module
30%
Damaged wiring harness or connector to left sensor
20%
Sensor misalignment or physical damage from impact
10%
Power supply or ground circuit fault to sensor
5%
CAN bus communication failure on sensor network
Diagnostic Steps
1
Step 1: Inspect left front bumper area for physical damage or sensor misalignment
2
Step 2: Check power and ground circuits at sensor connector with voltmeter
3
Step 3: Examine sensor connector and harness for damage, corrosion, or water intrusion
4
Step 4: Verify CAN bus communication signals at sensor connector
5
Step 5: Test sensor operation or replace if circuits are intact; perform sensor calibration after repair
Estimated Repair Cost
$300 - $1,800
Parts + labor, varies by vehicle and location
The left front distance range sensor for adaptive cruise control has lost network communication. This radar or ultrasonic sensor monitors the distance to vehicles ahead for adaptive cruise and collision avoidance.
The most common cause of U023D (Lost Communication With Cruise Control Front Distance Range Sensor Left) is: Failed left front distance sensor module
Typical repair costs for U023D range from $300 to $1,800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Adaptive cruise control and forward collision warning will be disabled or function improperly. Driver must maintain full manual control of vehicle speed and following distance.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U023D to identify the root cause.
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Quick Info
Category
Network
System
Adaptive Cruise Control / Collision Avoidance
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
