u1139 invalid or missing data for primary id 2

OBD2 Code: U1139

Description: Invalid or Missing Data for Primary ID 2

Definition: This code indicates that there is a communication issue between the vehicle’s control modules, specifically related to the data from the primary identifier (ID) 2. It suggests that the data being received is either invalid or not present.

: Invalid or Missing Data for Primary ID 2
Severity: Moderate

Common Causes

U1139 – Invalid or Missing Data for Primary ID 2

Description: This code indicates that there is invalid or missing data for primary ID 2.

Common Causes:

• Loose or corroded connections in the communication network
• Faulty wiring harness
• Defective control module
• Interference from other electronic devices

 

Common Misdiagnosis

OBD2 Code: U1139
Description: Invalid or Missing Data for Primary ID 2
Common Misdiagnosis: Faulty wiring or connectors, assuming a faulty control module without proper diagnosis.

 

Common Diagnostic Steps

Invalid or Missing Data for Primary ID 2

1. Check the vehicle’s battery voltage and ensure it is within the specified range.
2. Inspect all related fuses and relays for any signs of damage or failure.
3. Examine the wiring harness and connectors associated with the primary ID 2 circuit for any loose connections, corrosion, or damage.
4. Use a scan tool to check for any additional trouble codes that may provide more context or indicate related issues.
5. Verify the integrity of the data bus communication lines by checking for continuity and resistance levels.
6. If applicable, update or reprogram the vehicle’s control module software to ensure compatibility with current standards.
7. If necessary, replace faulty components such as sensors, modules, or wiring that are contributing to the issue.