OBD Guide
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U1093

Invalid Or Missing Data For Primary Id

U1093 is an OBD-II diagnostic trouble code meaning: Invalid Or Missing Data For Primary Id. Common causes: can bus or wiring problems, module software failures. Estimated repair cost: ~$167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
~$167 (est.)

Symptoms

  • Check Engine Light Is On
  • Malfunctions of electronic systems
  • Loss of settings data
  • Intermittent operation of the dashboard
  • Functionality limitation

Causes

  • CAN bus or wiring problems
  • Module software failures
  • Low voltage in the on-board network
  • Damage to electronic modules
  • Corrosion of connectors

How to Fix

  1. Check battery condition and voltage
  2. Inspect the CAN bus connectors and wiring
  3. Read all error codes from different modules
  4. Update the software of the problematic module
  5. Carry out diagnostics of communication between modules

Related codes

U1000U1094U1095

FAQ

What does the U1093 code mean?

U1093 is an OBD-II diagnostic trouble code that indicates: Invalid Or Missing Data For Primary Id

What causes a U1093 error code?

The most common causes of U1093 include: CAN bus or wiring problems; Module software failures; Low voltage in the on-board network; Damage to electronic modules.

How do I fix a U1093 diagnostic trouble code?

To fix U1093: Check battery condition and voltage. Inspect the CAN bus connectors and wiring. Read all error codes from different modules. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U1093?

Yes, but get it checked soon

How much does it cost to fix U1093?

The estimated repair cost for U1093 is ~$167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat