What Does U1105 Mean?
Similar to U1104, this code indicates invalid or missing chassis status data on the SCP J1850 network, but may represent a different data parameter or secondary communication failure. Multiple U-codes often indicate systemic network issues rather than isolated faults.
Common Causes
35%
Faulty chassis control module or suspension control module not responding
30%
SCP network bus short to ground or open circuit in wiring harness
20%
Failed wheel speed sensors or related input affecting chassis status reporting
10%
Intermittent power loss to communicating modules
5%
Electromagnetic interference disrupting network communications
Diagnostic Steps
1
Step 1: Verify all chassis-related modules are powered and have good ground connections; check relevant fuses
2
Step 2: Monitor network communications with scan tool to identify which specific chassis parameter is missing
3
Step 3: Inspect all connectors between chassis modules for corrosion, water intrusion, or pushed-back pins
4
Step 4: Test continuity and resistance of SCP bus lines; look for shorts to power or ground
5
Step 5: Compare wheel speed sensor signals and verify all sensors are reporting properly to the network
Estimated Repair Cost
$150 - $1,400
Parts + labor, varies by vehicle and location
Similar to U1104, this code indicates invalid or missing chassis status data on the SCP J1850 network, but may represent a different data parameter or secondary communication failure. Multiple U-codes often indicate systemic network issues rather than isolated faults.
The most common cause of U1105 (SCP (J1850) Invalid or Missing Data for Chassis Status Request) is: Faulty chassis control module or suspension control module not responding
Typical repair costs for U1105 range from $150 to $1,400, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Chassis stability systems may not function correctly. Steering, suspension, or braking assistance features could be disabled.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U1105 to identify the root cause.
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Quick Info
Category
Network
System
Vehicle Communication Network
Difficulty
Type
Manufacturer
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