OBD Guide
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U1168

Invalid Or Missing Data For Primary Id

U1168 is an OBD-II diagnostic trouble code meaning: Invalid Or Missing Data For Primary Id. Common causes: damage to the can bus, malfunction of one of the electronic modules. Estimated repair cost: $17–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–167 (est.)

Symptoms

  • Check Engine Light Is On
  • There may be malfunctions in various vehicle systems
  • Lost connection with some modules
  • Unstable engine operation
  • Errors in other systems

Causes

  • Damage to the CAN bus
  • Malfunction of one of the electronic modules
  • Wiring Harness Problems
  • Corrosion or poor contact in connectors
  • Software error in the module

How to Fix

  1. Check the integrity of the CAN bus
  2. Diagnose all modules for errors
  3. Inspect wiring harnesses and connectors
  4. Update module software
  5. Replace the faulty module if necessary

Related codes

U1167U1169U1170

FAQ

What does the U1168 code mean?

U1168 is an OBD-II diagnostic trouble code that indicates: Invalid Or Missing Data For Primary Id

What causes a U1168 error code?

The most common causes of U1168 include: Damage to the CAN bus; Malfunction of one of the electronic modules; Wiring Harness Problems; Corrosion or poor contact in connectors.

How do I fix a U1168 diagnostic trouble code?

To fix U1168: Check the integrity of the CAN bus. Diagnose all modules for errors. Inspect wiring harnesses and connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U1168?

Yes, but get it checked soon

How much does it cost to fix U1168?

The estimated repair cost for U1168 is $17–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat