What Does U0587 Mean?
The receiving control module detects invalid data from the Radiator Anti-Tamper Device, which monitors unauthorized access or tampering with cooling system components. This is a security-related communication fault.
Common Causes
35%
Failed anti-tamper sensor or module with internal electronics failure
30%
Damaged or corroded wiring to anti-tamper device due to engine bay environment
20%
Triggered anti-tamper switch from previous service work or radiator removal not properly reset
10%
Ground circuit failure at anti-tamper device location
5%
Actual tampering attempt or unauthorized radiator access detected by system
Diagnostic Steps
1
Step 1: Locate radiator anti-tamper device; check service history to see if radiator was recently removed for service
2
Step 2: Inspect anti-tamper sensor for physical damage, proper mounting, and secure connection
3
Step 3: Check for reset procedure in service information; some systems require manual reset after legitimate radiator service
4
Step 4: Verify power and ground circuits to anti-tamper device with multimeter
5
Step 5: Monitor device status with scan tool to determine if sensor is reporting open, short, or invalid data condition
Estimated Repair Cost
$100 - $600
Parts + labor, varies by vehicle and location
The receiving control module detects invalid data from the Radiator Anti-Tamper Device, which monitors unauthorized access or tampering with cooling system components. This is a security-related communication fault.
The most common cause of U0587 (Invalid Data Received From With Radiator Anti Tamper Device) is: Failed anti-tamper sensor or module with internal electronics failure
Typical repair costs for U0587 range from $100 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
No direct safety impact. This is a security monitoring system; vehicle operation is not affected but tampering alerts may be logged.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0587 to identify the root cause.
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Quick Info
Category
Network
System
Security / Anti-Theft System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
