What Does U1196 Mean?
The door lock control module is not transmitting or receiving valid data over the J1850 SCP network. This prevents proper communication between the body control module and door lock actuators.
Common Causes
35%
Failed driver or passenger door module (DDM/PDM)
30%
Corroded or broken wiring in door harness, particularly at flex points
20%
Body Control Module (BCM) communication fault or software issue
15%
SCP network short to ground or power affecting multiple modules
Diagnostic Steps
1
Step 1: Use scan tool to identify which specific module is not responding on the SCP network
2
Step 2: Verify power and ground at the suspected door module using a digital multimeter
3
Step 3: Inspect and wiggle-test door harness wiring at hinge area while monitoring communication
4
Step 4: Measure SCP bus voltage at module connector (should see 0-7V transitions with ignition on)
5
Step 5: Substitute known-good door module if all circuit tests pass but communication remains lost
Estimated Repair Cost
$175 - $650
Parts + labor, varies by vehicle and location
The door lock control module is not transmitting or receiving valid data over the J1850 SCP network. This prevents proper communication between the body control module and door lock actuators.
The most common cause of U1196 (SCP (J1850) Invalid or Missing Data for Door Locks) is: Failed driver or passenger door module (DDM/PDM)
Typical repair costs for U1196 range from $175 to $650, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Door locks may not function properly, potentially compromising vehicle security. Remote keyless entry and automatic lock/unlock features may be inoperative.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U1196 to identify the root cause.
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Quick Info
Category
Network
System
Body Control Network / Door Lock System
Difficulty
Type
Manufacturer
Recommended Tools
OBD2 Scanner
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