What Does U1153 Mean?
The Standard Corporate Protocol (SCP) communication network is reporting invalid or missing data from an experimental module #3. This indicates a communication failure on the J1850 bus network, preventing proper data exchange between modules.
Common Causes
35%
Faulty or disconnected experimental module #3
30%
Damaged or corroded wiring in the SCP bus network
20%
Poor ground connection at experimental module
10%
Communication bus termination resistor failure
5%
PCM or gateway module communication fault
Diagnostic Steps
1
Step 1: Use scan tool to monitor live SCP bus network communication and identify which module is not responding
2
Step 2: Inspect experimental module #3 connector for loose connections, corrosion, or damage
3
Step 3: Check voltage and ground at experimental module connector with DVOM
4
Step 4: Measure resistance between SCP bus terminals (should be approximately 40-60 ohms with termination)
5
Step 5: If wiring and power are good, replace experimental module #3
Estimated Repair Cost
$100 - $600
Parts + labor, varies by vehicle and location
The Standard Corporate Protocol (SCP) communication network is reporting invalid or missing data from an experimental module #3. This indicates a communication failure on the J1850 bus network, preventing proper data exchange between modules.
The most common cause of U1153 (SCP (J1850) Invalid or Missing Data for Experimental #3) is: Faulty or disconnected experimental module #3
Typical repair costs for U1153 range from $100 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Minimal safety impact. Vehicle may experience reduced functionality of experimental features but core driving functions typically unaffected.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U1153 to identify the root cause.
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Quick Info
Category
Network
System
Vehicle Communication Network
Difficulty
Type
Manufacturer
Recommended Tools
OBD2 Scanner
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