OBD Guide
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U1224

Invalid Or Missing Data For Primary Id

U1224 is an OBD-II diagnostic trouble code meaning: Invalid Or Missing Data For Primary Id. Common causes: damage to the can bus wiring harness, poor contact in module connectors. Estimated repair cost: $22–111.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$22–111 (est.)

Symptoms

  • Check Engine Light Is On
  • Incorrect operation of the vehicle's electronic systems
  • Problems starting the engine
  • Lost communication with one or more modules
  • Reduced engine performance

Causes

  • Damage to the CAN bus wiring harness
  • Poor contact in module connectors
  • Malfunction of one of the electronic modules
  • Problems with the module software
  • Short circuit in the CAN bus circuit

How to Fix

  1. Check the integrity of the CAN bus wiring harness
  2. Inspect and clean all module connectors
  3. Run diagnostics on all associated modules
  4. Update module software (if possible)
  5. Check power supply and grounding of modules

Related codes

U1223U1225U1226

FAQ

What does the U1224 code mean?

U1224 is an OBD-II diagnostic trouble code that indicates: Invalid Or Missing Data For Primary Id

What causes a U1224 error code?

The most common causes of U1224 include: Damage to the CAN bus wiring harness; Poor contact in module connectors; Malfunction of one of the electronic modules; Problems with the module software.

How do I fix a U1224 diagnostic trouble code?

To fix U1224: Check the integrity of the CAN bus wiring harness. Inspect and clean all module connectors. Run diagnostics on all associated modules. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U1224?

Yes, but get it checked soon

How much does it cost to fix U1224?

The estimated repair cost for U1224 is $22–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat