OBD Guide
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U1A05

Telematics Control Unit USB Communication

U1A05 is an OBD-II diagnostic trouble code meaning: Telematics Control Unit USB Communication. Common causes: damaged usb cable or connector, problems with the telematics module software. Estimated repair cost: $17–89.

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

Symptoms

  • Navigation system does not work
  • There is no connection with the mobile application
  • Media display errors
  • Voice control interruptions

Causes

  • Damaged USB cable or connector
  • Problems with the telematics module software
  • Telematics control unit malfunction
  • Problems with module power supply

How to Fix

  1. Check the USB cable and connectors for damage
  2. Reboot the telematics module (disconnect the battery for 10 minutes)
  3. Update telematics system software
  4. Check fuses and power circuit
  5. Diagnostics and replacement of the telematics control unit

Related codes

U1A00U1A04

FAQ

What does the U1A05 code mean?

U1A05 is an OBD-II diagnostic trouble code that indicates: Telematics Control Unit USB Communication

What causes a U1A05 error code?

The most common causes of U1A05 include: Damaged USB cable or connector; Problems with the telematics module software; Telematics control unit malfunction; Problems with module power supply.

How do I fix a U1A05 diagnostic trouble code?

To fix U1A05: Check the USB cable and connectors for damage. Reboot the telematics module (disconnect the battery for 10 minutes). Update telematics system software. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U1A05?

Yes, but get it checked soon

How much does it cost to fix U1A05?

The estimated repair cost for U1A05 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat