Telematics Control Unit SIM Card


Table of contents

U1A03 NISSAN Possible Causes

  • Faulty Telematics Control Unit (TCU)
  • Telematics Control Unit harness is open or shorted
  • Telematics Control Unit circuit poor electrical connection

How do I fix code U1A03 NISSAN?

  Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.

Cost of diagnosing the U1A03 NISSAN code

  The cost of diagnosing the U1A03 NISSAN code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

U1A03 NISSAN Description

  The Diagnostic Trouble Code (DTC) will set when the Telematics Control Unit (TCU) SIM card is not inserted or unable to be read.

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