OBD Guide
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U1039

Invalid Or Missing Data For Primary Id Vehicle Speed

U1039 is an OBD-II diagnostic trouble code meaning: Invalid Or Missing Data For Primary Id Vehicle Speed. Common causes: wheel speed sensor malfunction, wiring harness damage. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Incorrect speedometer readings
  • Disabling cruise control
  • Errors in automatic transmission operation
  • Check Engine Light Illuminates
  • Problems with the stabilization system

Causes

  • Wheel speed sensor malfunction
  • Wiring harness damage
  • Problems with the CAN bus
  • ABS module malfunction
  • Software error in the ECU

How to Fix

  1. Check wheel speed sensors
  2. Inspect the wiring harness for damage
  3. Check CAN bus connections
  4. Read error codes from ABS module
  5. Update ECU firmware if necessary

Related codes

U1040U1038U0121

FAQ

What does the U1039 code mean?

U1039 is an OBD-II diagnostic trouble code that indicates: Invalid Or Missing Data For Primary Id Vehicle Speed

What causes a U1039 error code?

The most common causes of U1039 include: Wheel speed sensor malfunction; Wiring harness damage; Problems with the CAN bus; ABS module malfunction.

How do I fix a U1039 diagnostic trouble code?

To fix U1039: Check wheel speed sensors. Inspect the wiring harness for damage. Check CAN bus connections. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U1039?

Limited driving only, diagnose soon

How much does it cost to fix U1039?

The estimated repair cost for U1039 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat