WOMS
U code network Medium severity

U1170 SCP (J1850) Invalid or Missing Data for Cellular Phone / Paging System

The OBD2 code U1170 SCP (J1850) indicates that there is invalid or missing data related to the cellular phone or paging system in the vehicle's communication network

Definition

The OBD2 code U1170 SCP (J1850) indicates that there is invalid or missing data related to the cellular phone or paging system in the vehicle's communication network

Common causes

  • Faulty or disconnected wiring harness
  • Malfunctioning cellular phone or paging system
  • Poor or corroded connections
  • Failed control module
  • Software issues or bugs in the control module
  • Interference from other electronic devices
  • Low battery voltage or power supply issues
  • Faulty sensors or components related to the system

Common misdiagnoses

  • Faulty cellular phone or paging system
  • Wiring issues or damaged connectors
  • Faulty body control module (BCM)
  • Incorrectly programmed or incompatible modules
  • Software glitches or outdated firmware
  • Issues with the vehicle's communication network (CAN bus)
  • Faulty or weak battery affecting module performance
  • Interference from aftermarket devices or accessories

Troubleshooting steps

  1. 1. Check for Additional Codes

    Use an OBD-II scanner to check for any other trouble codes that may be present. Sometimes, multiple codes can provide more context for the issue

  2. 2. Inspect Wiring and Connectors

    Visual Inspection: Check the wiring and connectors related to the cellular phone/paging system. Look for signs of damage, corrosion, or loose connections

  3. 3. Connector Pins

    Ensure that the pins in the connectors are not bent or corroded

  4. 4. Check the Cellular Phone/Paging System

    Functionality: Verify that the cellular phone or paging system is functioning correctly. If it’s an aftermarket system, ensure it’s compatible with the vehicle

  5. 5. Reset the System

    If applicable, try resetting the cellular phone/paging system to see if that resolves the issue

  6. 6. Inspect the Module

    Cellular Module: If the vehicle has a dedicated module for the cellular phone/paging system, check its operation. This may involve testing the module or replacing it if it’s found to be faulty

  7. 7. Check for Software Updates

    ECU Updates: Check if there are any software updates available for the vehicle’s ECU or the cellular phone/paging system. Sometimes, manufacturers release updates to fix bugs or improve compatibility

  8. 8. Battery and Ground Connections

    Battery Voltage: Ensure that the vehicle’s battery is in good condition and fully charged. Low voltage can cause communication issues

  9. 9. Ground Connections

    Check all ground connections related to the cellular system and the vehicle’s ECU. Poor grounding can lead to communication errors

  10. 10. Perform a Hard Reset

    Disconnect the vehicle’s battery for a few minutes to reset the ECU. Reconnect and see if the code reappears

  11. 11. Consult Technical Service Bulletins (TSBs)

    Look for any TSBs related to the U1170 code for your specific vehicle make and model. Manufacturers may have specific recommendations or known issues

  12. 12. Professional Diagnosis

    If the issue persists after performing the above steps, consider taking the vehicle to a professional mechanic or dealership. They may have specialized diagnostic tools and knowledge to address the issue more effectively

  13. 13. Document Findings

    Keep a record of any changes made, codes cleared, and observations during the troubleshooting process. This information can be helpful for future reference or if you need to consult a professional. By following these steps, you should be able to identify the root cause of the U1170 code and take appropriate action to resolve it