OBD Guide
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U1019

Invalid Or Missing Data For Primary Id

U1019 is an OBD-II diagnostic trouble code meaning: Invalid Or Missing Data For Primary Id. Common causes: problems with the can bus, wiring harness damage. Estimated repair cost: $17–222.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–222 (est.)

Symptoms

  • Check Engine Light Is On
  • Malfunctions of electronic systems
  • Lost connection with some modules
  • Unstable engine operation
  • Limitations in the operation of comfort systems

Causes

  • Problems with the CAN bus
  • Wiring harness damage
  • Malfunction of one of the electronic modules
  • Problems with module power supply
  • Software errors

How to Fix

  1. Check the integrity of the CAN bus
  2. Inspect wiring harnesses for damage
  3. Check power supply of all modules
  4. Count errors from all available modules
  5. If necessary, reflash or replace the faulty module

Related codes

U1000U1018U1020

FAQ

What does the U1019 code mean?

U1019 is an OBD-II diagnostic trouble code that indicates: Invalid Or Missing Data For Primary Id

What causes a U1019 error code?

The most common causes of U1019 include: Problems with the CAN bus; Wiring harness damage; Malfunction of one of the electronic modules; Problems with module power supply.

How do I fix a U1019 diagnostic trouble code?

To fix U1019: Check the integrity of the CAN bus. Inspect wiring harnesses for damage. Check power supply of all modules. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U1019?

Yes, but get it checked soon

How much does it cost to fix U1019?

The estimated repair cost for U1019 is $17–222. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat