What Does U1204 Mean?
The control module cannot receive valid data from the steering column control module over the SCP network. This affects communication for functions like cruise control, multifunction switches, or steering angle sensors.
Common Causes
35%
Damaged steering column wiring harness or connector corrosion
30%
Failed steering column control module or multifunction switch
20%
SCP network communication failure at central body control module
15%
Damaged clock spring or spiral cable assembly
Diagnostic Steps
1
Step 1: Inspect steering column connectors for corrosion, damage, or bent pins
2
Step 2: Test clock spring continuity and resistance according to manufacturer specifications
3
Step 3: Monitor live data from steering column module to verify signal presence
4
Step 4: Check power and ground circuits at steering column control module
5
Step 5: Test communication circuit resistance between steering column module and body control module
Estimated Repair Cost
$150 - $700
Parts + labor, varies by vehicle and location
The control module cannot receive valid data from the steering column control module over the SCP network. This affects communication for functions like cruise control, multifunction switches, or steering angle sensors.
The most common cause of U1204 (SCP (J1850) Invalid or Missing Data for Steering Column) is: Damaged steering column wiring harness or connector corrosion
Typical repair costs for U1204 range from $150 to $700, depending on the vehicle, location, and whether you do it yourself or go to a shop.
May affect cruise control, turn signals, or other steering column functions. Important safety features may be disabled requiring prompt repair.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U1204 to identify the root cause.
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Quick Info
Category
Network
System
Steering Column Control Network
Difficulty
Type
Manufacturer
Recommended Tools
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