OBD Guide
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U1281

Lost Communication With MICU

U1281 is an OBD-II diagnostic trouble code meaning: Lost Communication With MICU. Common causes: open or short circuit in wiring harness, micu module malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Power windows don't work
  • Problems with central locking
  • Lighting faults
  • Lack of response to commands from the key fob
  • Check Engine Light Is On

Causes

  • Open or short circuit in wiring harness
  • MICU module malfunction
  • MICU power supply problems
  • Contact corrosion
  • Problems with the CAN data bus

How to Fix

  1. Check the integrity of the wiring harness to the MICU
  2. Check fuses associated with MICU
  3. Diagnose the state of the CAN bus
  4. Check MICU connections and contacts
  5. If necessary, replace the MICU module

Related codes

U1280U1282U1283

FAQ

What does the U1281 code mean?

U1281 is an OBD-II diagnostic trouble code that indicates: Lost Communication With MICU

What causes a U1281 error code?

The most common causes of U1281 include: Open or short circuit in wiring harness; MICU module malfunction; MICU power supply problems; Contact corrosion.

How do I fix a U1281 diagnostic trouble code?

To fix U1281: Check the integrity of the wiring harness to the MICU. Check fuses associated with MICU. Diagnose the state of the CAN bus. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with U1281?

Limited driving only, diagnose soon

How much does it cost to fix U1281?

The estimated repair cost for U1281 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat