What Does U1237 Mean?
The module is not receiving valid memory storage data over the SCP (Standard Corporate Protocol) J1850 network bus. This indicates a communication breakdown between modules that share memory-related information such as seat positions, radio presets, or climate settings.
Common Causes
35%
Failed or corrupted memory module or body control module
30%
Damaged or corroded SCP bus wiring or connectors
20%
Poor ground connection at memory module or BCM
10%
Faulty terminating resistor on SCP bus
5%
Software corruption or module programming issue
Diagnostic Steps
1
Step 1: Use scan tool to monitor SCP bus communication and identify which module is not transmitting memory data
2
Step 2: Check for additional U-codes that may identify the specific faulty module
3
Step 3: Inspect SCP bus wiring harness for damage, particularly near memory seat/mirror modules and BCM
4
Step 4: Test voltage and ground at suspect module connectors (should see 5V reference on data bus)
5
Step 5: If wiring is intact, attempt module reprogramming or replacement of identified faulty module
Estimated Repair Cost
$150 - $800
Parts + labor, varies by vehicle and location
The module is not receiving valid memory storage data over the SCP (Standard Corporate Protocol) J1850 network bus. This indicates a communication breakdown between modules that share memory-related information such as seat positions, radio presets, or climate settings.
The most common cause of U1237 (SCP (J1850) Invalid or Missing Data for Memory Storage) is: Failed or corrupted memory module or body control module
Typical repair costs for U1237 range from $150 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
No direct safety impact. Memory features like seat positions and mirror settings may not function properly, causing driver inconvenience.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U1237 to identify the root cause.
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Quick Info
Category
Network
System
Body Control / Memory System
Difficulty
Type
Manufacturer
Recommended Tools
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