OBD Guide
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U1106

Invalid Or Missing Data For Legislated Diagnostics

U1106 is an OBD-II diagnostic trouble code meaning: Invalid Or Missing Data For Legislated Diagnostics. Common causes: damage to the can bus wiring harness, short circuit in communication circuit. Estimated repair cost: $17–111.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–111 (est.)

Symptoms

  • Check Engine light is on
  • Reduced engine power
  • Problems starting the engine
  • Unstable engine operation at idle
  • Errors in other vehicle systems

Causes

  • Damage to the CAN bus wiring harness
  • Short circuit in communication circuit
  • Malfunction of one of the electronic modules
  • Problems with module power supply
  • Incorrect module programming

How to Fix

  1. Check the integrity of the CAN bus wiring harness
  2. Diagnose the condition of electronic modules
  3. Check connections and connector contacts
  4. Read error codes of all modules
  5. Reprogram or replace faulty modules

Related codes

U1107U1108U1109

FAQ

What does the U1106 code mean?

U1106 is an OBD-II diagnostic trouble code that indicates: Invalid Or Missing Data For Legislated Diagnostics

What causes a U1106 error code?

The most common causes of U1106 include: Damage to the CAN bus wiring harness; Short circuit in communication circuit; Malfunction of one of the electronic modules; Problems with module power supply.

How do I fix a U1106 diagnostic trouble code?

To fix U1106: Check the integrity of the CAN bus wiring harness. Diagnose the condition of electronic modules. Check connections and connector contacts. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U1106?

Yes, but get it checked soon

How much does it cost to fix U1106?

The estimated repair cost for U1106 is $17–111. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat