What Does U1062 Mean?
This code indicates the module is not receiving valid data messages from another control module via the SCP (Standard Corporate Protocol) J1850 communication bus. A specific module identified by its Primary ID is either sending corrupt data or not communicating at all on the network.
Common Causes
35%
Faulty or failed control module that should be transmitting on this Primary ID
30%
Damaged or corroded wiring in the SCP bus circuit between modules
20%
Poor ground connection affecting module communication
10%
Low system voltage or battery issues causing module communication failure
5%
SCP bus termination resistor failure or open circuit in bus topology
Diagnostic Steps
1
Step 1: Check battery voltage and ensure it is at least 12.4V with key off, 13.8-14.5V running
2
Step 2: Use scan tool to identify which specific module Primary ID is missing (consult manufacturer documentation for ID mapping)
3
Step 3: Inspect SCP bus wiring harness for damage, chafing, or pinched wires between communicating modules
4
Step 4: Check module ground connections and clean/tighten as needed
5
Step 5: Measure SCP bus voltage at data link connector (should see 0-7V fluctuations during communication)
Estimated Repair Cost
$150 - $1,200
Parts + labor, varies by vehicle and location
This code indicates the module is not receiving valid data messages from another control module via the SCP (Standard Corporate Protocol) J1850 communication bus. A specific module identified by its Primary ID is either sending corrupt data or not communicating at all on the network.
The most common cause of U1062 (SCP (J1850) Invalid or Missing Data for Primary Id) is: Faulty or failed control module that should be transmitting on this Primary ID
Typical repair costs for U1062 range from $150 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
May cause loss of critical vehicle functions depending on which module is not communicating. Vehicle may experience driveability issues, gauge malfunctions, or fail to start.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U1062 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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