What Does U045A Mean?
The vehicle network is receiving corrupted or out-of-range data from Parking Assist Control Module A. This communication error prevents proper parking sensor operation and coordination with other vehicle systems.
Common Causes
30%
Faulty Parking Assist Control Module A with internal hardware or software failure
25%
Defective parking sensors sending incorrect distance data to the module
25%
Corroded or damaged wiring connections between parking assist module and vehicle network
15%
CAN bus communication issues affecting data transmission quality
5%
Low voltage supply or poor ground affecting module signal processing
Diagnostic Steps
1
Step 1: Use scan tool to view live data from parking assist module and identify which sensor or parameter is sending invalid data
2
Step 2: Visually inspect all parking sensors for physical damage, dirt buildup, or water intrusion
3
Step 3: Test each parking sensor individually using resistance/voltage tests per manufacturer specifications
4
Step 4: Inspect parking assist module connector and wiring for corrosion, damage, or loose terminals
5
Step 5: If sensors and wiring test good, attempt module reprogramming; replace parking assist module if invalid data persists
Estimated Repair Cost
$100 - $900
Parts + labor, varies by vehicle and location
The vehicle network is receiving corrupted or out-of-range data from Parking Assist Control Module A. This communication error prevents proper parking sensor operation and coordination with other vehicle systems.
The most common cause of U045A (Invalid Data Received From Parking Assist Control Module "A") is: Faulty Parking Assist Control Module A with internal hardware or software failure
Typical repair costs for U045A range from $100 to $900, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Parking assist system may not function properly, increasing risk of low-speed collisions while parking. Driver should use extra caution when maneuvering in tight spaces.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U045A to identify the root cause.
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Quick Info
Category
Network
System
Parking Assist and Driver Assistance
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
