What Does U0422 Mean?
A control module received corrupted or implausible data from the Body Control Module (BCM) via the vehicle network. The BCM manages numerous body systems including lighting, locks, and climate control coordination.
Common Causes
35%
Faulty Body Control Module with internal processor or memory failure
30%
Damaged wiring harness or corroded connectors at BCM
20%
CAN bus network fault causing widespread communication errors
10%
Low battery voltage or power supply issues affecting BCM operation
5%
BCM software corruption or calibration error
Diagnostic Steps
1
Step 1: Check if Body Control Module responds to scan tool and other modules can see it on the network
2
Step 2: Inspect BCM location (often under dash or in fuse box) for water damage, corrosion, or connector problems
3
Step 3: Test battery voltage and BCM power supply circuits to ensure proper voltage under all conditions
4
Step 4: Monitor CAN bus signals with oscilloscope and verify data integrity between BCM and other modules
5
Step 5: Reprogram BCM if hardware tests are good, replace BCM if internal fault is confirmed
Estimated Repair Cost
$200 - $1,400
Parts + labor, varies by vehicle and location
A control module received corrupted or implausible data from the Body Control Module (BCM) via the vehicle network. The BCM manages numerous body systems including lighting, locks, and climate control coordination.
The most common cause of U0422 (Invalid Data Received From Body Control Module) is: Faulty Body Control Module with internal processor or memory failure
Typical repair costs for U0422 range from $200 to $1,400, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Various body functions may be affected including lights, locks, or wipers. Safety systems like lighting are critical and should be verified functional before driving.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0422 to identify the root cause.
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Quick Info
Category
Network
System
Body Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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