u1022 scp j1850 invalid or missing data for primary id

By Fixitfor.us |

Definition: The OBD-II code U1022 indicates that there is an issue with the communication network in the vehicle, specifically related to the SCP (Standard Corporate Protocol) J1850 bus. This code means that there is invalid or missing data from a module identified as the primary ID on this network.

U1022 – SCP (J1850) Invalid or Missing Data for Primary ID

Severity: Moderate

Common Causes

U1022 SCP J1850 Invalid or Missing Data for Primary ID

Common Causes:

  • Malfunctioning or damaged wiring in the SCP (Standard Corporate Protocol) network
  • Faulty module communicating on the SCP network
  • Issues with the PCM (Powertrain Control Module)
  • Interference from other electronic devices affecting communication on the network

 

Common Misdiagnosis

OBD2 Code: U1022
Description: SCP (J1850) Invalid or Missing Data for Primary ID
Common Misdiagnosis: Faulty wiring or connectors are often misdiagnosed as a malfunctioning control module.

 

Common Diagnostic Steps

OBD2 Code: U1022
Description: SCP (J1850) Invalid or Missing Data for Primary ID
Common Diagnostic Steps:

  • Verify the code using an OBD-II scanner and clear it to see if it returns.
  • Inspect all related wiring and connectors for damage, corrosion, or disconnection.
  • Check the integrity of the SCP (J1850) communication bus circuit.
  • Test the primary control module for proper operation and ensure it’s receiving power and ground signals correctly.
  • Examine other modules on the network for faults that may affect communication.
  • If necessary, update or reprogram the affected control module with the latest software from the manufacturer.
  • If issues persist, consult a professional technician for advanced diagnostics and repair.

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