u1104 scp j1850 invalid or missing data for chassis status request

OBD2 Code: U1104

Description: SCP (J1850) Invalid or Missing Data for Chassis Status Request

Definition: This code indicates that there is an issue with the communication network in the vehicle, specifically related to the SCP (Standard Corporate Protocol) J1850 bus. The system has detected invalid or missing data when attempting to retrieve chassis status information.

U1104 SCP J1850 Invalid or Missing Data for Chassis Status Request:
Severity: Moderate

Common Causes

SCP J1850 Invalid or Missing Data for Chassis Status Request

Common Causes:

• Communication issues between modules on the vehicle network
• Faulty wiring or connectors in the communication network
• Defective chassis control module
• Software issues within the vehicle’s control modules

 

Common Misdiagnosis

SCP J1850 Invalid or Missing Data for Chassis Status Request: Common misdiagnosis includes replacing the chassis control module without verifying proper communication and wiring integrity.

 

Common Diagnostic Steps

OBD2 Code: U1104
Description: SCP (J1850) Invalid or Missing Data for Chassis Status Request
Common Diagnostic Steps:

• Check for any other stored trouble codes that might be related to communication issues.
• Inspect the vehicle’s wiring harness and connectors for signs of damage, corrosion, or loose connections.
• Verify the integrity of the SCP (J1850) communication bus using a multimeter or oscilloscope.
• Test the modules on the network to ensure they are functioning correctly and communicating properly.
• Update or reprogram any control modules if necessary, following manufacturer guidelines.
• If applicable, check for technical service bulletins (TSBs) related to this code and follow any recommended procedures.