OBD Guide
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U1123

Invalid Or Missing Data For Odometer

U1123 is an OBD-II diagnostic trouble code meaning: Invalid Or Missing Data For Odometer. Common causes: odometer sensor malfunction, wiring harness damage. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Incorrect display of mileage on the dashboard
  • Errors in the operation of mileage-dependent systems (for example, service intervals)
  • Malfunction indicator light comes on
  • Problems with displaying information on the display

Causes

  • Odometer sensor malfunction
  • Wiring harness damage
  • Problems with connecting connectors
  • CAN bus fault
  • Software error in the electronic control unit

How to Fix

  1. Check connections and integrity of wiring harness
  2. Scan all modules for additional errors
  3. Check the functionality of the odometer sensor
  4. Update ECU software
  5. Check the integrity of the CAN bus

Related codes

U1121U1122U1124

FAQ

What does the U1123 code mean?

U1123 is an OBD-II diagnostic trouble code that indicates: Invalid Or Missing Data For Odometer

What causes a U1123 error code?

The most common causes of U1123 include: Odometer sensor malfunction; Wiring harness damage; Problems with connecting connectors; CAN bus fault.

How do I fix a U1123 diagnostic trouble code?

To fix U1123: Check connections and integrity of wiring harness. Scan all modules for additional errors. Check the functionality of the odometer sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U1123?

Yes, but get it checked soon

How much does it cost to fix U1123?

The estimated repair cost for U1123 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat