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AutoCodes - Generic - U1138

U1138 Code - Invalid Or Missing Data For Primary Id

- Code Popularity: 5,633 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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By AutoCodes.com - Updated Apr 23, 2020
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|U1138 code possible causes

  • Faulty Module that is not communicating
  • Module harness is open or shorted
  • Module circuit poor electrical connection

|How do I fix code U1138 code?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Does your car have Safety Recalls? → Check here

|Cost of diagnosing U1138 code

Labor: 1.0

The cost of diagnosing the U1138 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

|What are U1138 code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|U1138 code description

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. When a module receives a message for a critical operating parameter, the module records the identification number of the module which sent the message for State of Health monitoring. A critical operating parameter is one which, when not received, requires that the module use a default value for that parameter. When a module does not associate an identification number with at least one critical parameter within 5 seconds of beginning serial data communication, the Diagnostic Trouble Code (DTC) is set.

OBDII Code u1138 - Invalid Or Missing Data For Primary Id - AutoCodes.com
U1138 Code - Invalid Or Missing Data For Primary Id

|Need more information with the U1138 code?

Need more information on how to fix the U1138 code? Get Access to Factory Service Manuals

|Need help with a U1138 code?

Get the u1138 code diagnosed by a professional: Find a repair shop in your area

|U1138 code comments

Help us improve AutoCodes.com. Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the u1138 code? Have you replaced any parts?
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