What Does U1132 Mean?
This code indicates that a control module is not receiving valid vehicle speed or motion data over the SCP (Standard Corporate Protocol) J1850 communication network. This typically means the Anti-lock Brake System (ABS) module or Powertrain Control Module (PCM) is failing to broadcast vehicle motion information.
Common Causes
35%
Faulty ABS module failing to transmit vehicle speed data
25%
Damaged or corroded SCP bus wiring or connectors
20%
Defective wheel speed sensors or tone rings
15%
Failed PCM not receiving or processing speed data
5%
Poor ground connections affecting network communication
Diagnostic Steps
1
Step 1: Check for other U-codes and ABS/PCM DTCs to identify which module is failing to communicate
2
Step 2: Inspect SCP bus wiring (typically tan/orange wire) for damage, corrosion, or connector issues
3
Step 3: Test wheel speed sensors for proper resistance and signal output while rotating wheels
4
Step 4: Use scan tool to monitor live data for vehicle speed signal from ABS module on network
5
Step 5: Check voltage at SCP bus terminals (should see 0-7V pulses) and verify module ground integrity
Estimated Repair Cost
$150 - $1,200
Parts + labor, varies by vehicle and location
This code indicates that a control module is not receiving valid vehicle speed or motion data over the SCP (Standard Corporate Protocol) J1850 communication network. This typically means the Anti-lock Brake System (ABS) module or Powertrain Control Module (PCM) is failing to broadcast vehicle motion...
The most common cause of U1132 (SCP (J1850) Invalid or Missing Data for Vehicle Motion) is: Faulty ABS module failing to transmit vehicle speed data
Typical repair costs for U1132 range from $150 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle may experience speedometer malfunction, cruise control inoperability, and transmission shift issues. ABS and traction control systems may be compromised.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U1132 to identify the root cause.
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Quick Info
Category
Network
System
Network Communication / Vehicle Speed Sensing
Difficulty
Type
Manufacturer
Recommended Tools
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