What Does U1160 Mean?
The module is not receiving valid communication data from another module on the J1850 Standard Corporate Protocol (SCP) network. This indicates a network communication breakdown preventing proper data exchange between vehicle control modules.
Common Causes
35%
Faulty or disconnected module on the SCP network
30%
Damaged or corroded wiring in the SCP network bus
20%
Poor ground connection affecting network communication
10%
Failed network termination resistor
5%
Aftermarket accessory interfering with network
Diagnostic Steps
1
Step 1: Identify which module is sending the Primary ID using manufacturer-specific scan tool with network monitoring capability
2
Step 2: Check power and ground supplies to the identified module using a multimeter
3
Step 3: Inspect SCP bus wiring and connectors for damage, corrosion, or loose connections
4
Step 4: Test network communication integrity using a digital oscilloscope to verify proper signal voltage (0-7V)
5
Step 5: Substitute or reflash suspected module if network signals are intact
Estimated Repair Cost
$150 - $800
Parts + labor, varies by vehicle and location
The module is not receiving valid communication data from another module on the J1850 Standard Corporate Protocol (SCP) network. This indicates a network communication breakdown preventing proper data exchange between vehicle control modules.
The most common cause of U1160 (SCP (J1850) Invalid or Missing Data for Primary Id) is: Faulty or disconnected module on the SCP network
Typical repair costs for U1160 range from $150 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle may experience reduced functionality in various systems, but typically safe to drive. Some features like cruise control, climate control, or instrumentation may not work properly.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U1160 to identify the root cause.
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Quick Info
Category
Network
System
Vehicle Communication Network
Difficulty
Type
Manufacturer
Recommended Tools
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