What Does U1185 Mean?
This is a duplicate or related code to U1184, indicating another module or parameter related to wiper/washer system data is missing from the SCP network. Multiple modules may require wiper status information for various functions.
Common Causes
40%
Defective wiper control module failing to broadcast status data to multiple modules
30%
SCP network communication fault affecting multiple message parameters
15%
Failed multifunction switch with intermittent signal output
15%
Body Control Module or receiving module fault preventing proper data reception
Diagnostic Steps
1
Step 1: Compare U1184 and U1185 source modules to determine if same or different receivers are affected
2
Step 2: Perform wiper system functional test including all modes (low, high, intermittent, mist, washer)
3
Step 3: Monitor multiple module data streams simultaneously to verify wiper data transmission
4
Step 4: Check for technical service bulletins addressing wiper communication issues for this vehicle
5
Step 5: Inspect and test all power and ground circuits to wiper control module and multifunction switch
Estimated Repair Cost
$120 - $600
Parts + labor, varies by vehicle and location
This is a duplicate or related code to U1184, indicating another module or parameter related to wiper/washer system data is missing from the SCP network. Multiple modules may require wiper status information for various functions.
The most common cause of U1185 (SCP (J1850) Invalid or Missing Data for Window Wiper / Washer) is: Defective wiper control module failing to broadcast status data to multiple modules
Typical repair costs for U1185 range from $120 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Wiper system functionality may be compromised affecting visibility. Rain-sensing or speed-dependent wiper features will likely not operate correctly.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U1185 to identify the root cause.
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Quick Info
Category
Network
System
Windshield Wiper/Washer System / Body Control Network
Difficulty
Type
Manufacturer
Recommended Tools
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