What Does U1161 Mean?
Similar to U1160, this code indicates missing or corrupted data from a Primary ID module on the SCP network. Multiple U116X codes suggest widespread network communication issues.
Common Causes
35%
Failed Body Control Module (BCM) or Powertrain Control Module (PCM)
30%
Open or shorted SCP bus wiring between modules
20%
Corroded or damaged module connectors
10%
Low battery voltage affecting network stability
5%
Water intrusion in module or harness
Diagnostic Steps
1
Step 1: Use factory scan tool to perform network integrity test and identify non-responding modules
2
Step 2: Measure voltage on SCP bus (should be 0-7V with network activity)
3
Step 3: Check all module connectors for corrosion, backed-out pins, or moisture
4
Step 4: Test battery voltage under load (should maintain above 12V during cranking)
5
Step 5: Isolate modules one at a time to identify if one is pulling down the network
Estimated Repair Cost
$150 - $900
Parts + labor, varies by vehicle and location
Similar to U1160, this code indicates missing or corrupted data from a Primary ID module on the SCP network. Multiple U116X codes suggest widespread network communication issues.
The most common cause of U1161 (SCP (J1850) Invalid or Missing Data for Primary Id) is: Failed Body Control Module (BCM) or Powertrain Control Module (PCM)
Typical repair costs for U1161 range from $150 to $900, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Generally safe to drive, but multiple systems may malfunction. Monitor for loss of critical functions like ABS or traction control warnings.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U1161 to identify the root cause.
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Quick Info
Category
Network
System
Vehicle Communication Network
Difficulty
Type
Manufacturer
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