OBD Guide
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U1247

Invalid Or Missing Data For Primary Id

U1247 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: ~$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 various vehicle systems
  • Lost connection with diagnostic equipment
  • Incorrect dashboard readings
  • Problems starting the engine

Causes

  • Damage to the CAN bus wiring harness
  • Poor contact in module connectors
  • Malfunction of one of the electronic modules
  • Problems with module power supply
  • Software errors in modules

How to Fix

  1. Check the integrity of the CAN bus wiring
  2. Inspect and clean all module connectors
  3. Check the power and ground of all modules
  4. Scan all modules for errors
  5. If necessary, reflash problematic modules

Related codes

U1234U1255U1262

FAQ

What does the U1247 code mean?

U1247 is an OBD-II diagnostic trouble code that indicates: Invalid Or Missing Data For Primary Id

What causes a U1247 error code?

The most common causes of U1247 include: Damage to the CAN bus wiring harness; Poor contact in module connectors; Malfunction of one of the electronic modules; Problems with module power supply.

How do I fix a U1247 diagnostic trouble code?

To fix U1247: Check the integrity of the CAN bus wiring. Inspect and clean all module connectors. Check the power and ground of all modules. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U1247?

Yes, but get it checked soon

How much does it cost to fix U1247?

The estimated repair cost for U1247 is ~$167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat