U1172 – SCP (J1850) Invalid or Missing Data for Remote Button Control

The ODBII code U1172 SCP (J1850) Invalid or Missing Data for Remote Button Control indicates that the vehicle’s communication network is not receiving valid data from the remote button control system, which may affect functions like keyless entry or remote start.

The severity of ODBII code U1172 is generally considered moderate.

Common Causes For: U1171 U1171: “Control Module Communication Fault”

• Faulty remote button control module
• Wiring issues or damaged connectors
• Poor ground connections
• Malfunctioning body control module (BCM)
• Interference from other electronic devices
• Software or firmware issues in the vehicle’s control modules
• Low battery voltage or weak battery
• Corroded or loose terminals in the wiring harness

Common misdiagnosis for U1172 SCP (J1850) Invalid or Missing Data for Remote Button Control

• Faulty remote key fob
• Weak or dead battery in the key fob
• Malfunctioning body control module (BCM)
• Wiring issues or shorts in the remote control circuit
• Software glitches in the vehicle’s electronic systems
• Faulty receiver module for remote signals
• Incorrectly programmed key fob
• Issues with the vehicle’s communication network (CAN bus)

Common Troubleshooting Steps

When dealing with OBD-II code U1172, which indicates “Invalid or Missing Data for Remote Button Control” on a vehicle using the SCP (J1850) communication protocol, there are several common troubleshooting steps you can take to diagnose and potentially resolve the issue. Here’s a structured approach:

• Check for Other Codes: Use an OBD-II scanner to check for any additional trouble codes. Sometimes, related codes can provide more context for the issue.
• Inspect the Remote Control: **Battery Check: Ensure that the battery in the remote key fob is functioning properly. Replace it if necessary.
• **Functionality Test: Test the remote control to see if it operates correctly. If it doesn’t work, the remote may be faulty.
• Examine the Vehicle’s Wiring and Connectors: **Visual Inspection: Look for any damaged, corroded, or loose wiring and connectors related to the remote control system.
• **Connector Integrity: Ensure that all connectors are securely attached and free of corrosion.
• Check the Body Control Module (BCM): The BCM is often responsible for interpreting signals from the remote control. Inspect the BCM for any signs of damage or malfunction.
• If possible, perform a reset or reprogramming of the BCM according to the manufacturer’s specifications.
• Test the Communication Network: Use a scan tool to monitor the communication between the BCM and other modules. Look for any communication errors or interruptions.
• Check for proper voltage and ground at the BCM and related components.
• Inspect for Interference: Ensure that there are no electronic devices or other sources of interference that could be affecting the remote control signal.
• Perform a System Reset: Disconnect the vehicle’s battery for a few minutes to reset the vehicle’s electronic systems. Reconnect and see if the code reappears.
• Consult Technical Service Bulletins (TSBs): Check for any TSBs related to the U1172 code for your specific vehicle make and model. Manufacturers may have known fixes or updates.
• Professional Diagnosis: If the issue persists after performing the above steps, consider seeking help from a professional mechanic or dealership. They may have specialized tools and knowledge to diagnose the problem more effectively.
• Replace Faulty Components: If a specific component (like the BCM or remote control) is identified as faulty during testing, replace it as necessary. By following these steps, you should be able to identify the root cause of the U1172 code and take appropriate action to resolve the issue.