AutoCodes – Generic – U1281

U1281 Code - Lost Communication With MICU

Quick Answer

The Diagnostic Trouble Code (DTC) sets when a communication malfunction was detected between the Gauge Control Module, the related units and the under-dash fuse/relay box. Common causes include Faulty Gauge Control Module, Gauge Control Module harness is open or shorted, Gauge Control Module circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: U1281 indicates Lost Communication With MICU.
Common causes: Common causes include Faulty Gauge Control Module, Gauge Control Module harness is open or shorted, Gauge Control Module circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 2,047

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 10, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1281 Description

The Diagnostic Trouble Code (DTC) sets when a communication malfunction was detected between the Gauge Control Module, the related units and the under-dash fuse/relay box. Multiplex Integrated Control Unit (MICU)

OBDII Code U1281 - Lost Communication With MICU - AutoCodes.com — U1281 Code - Lost Communication With MICU

What does this mean?

What are the Possible Causes of the DTC U1281?

Faulty Gauge Control Module
Gauge Control Module harness is open or shorted
Gauge Control Module circuit poor electrical connection

How to Fix the DTC U1281?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U1281 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the U1281 code?

Need more information on how to fix the U1281 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U1281 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U1281 Acura — Lost Communication With MICU
U1281 Honda — Lost Communication With MICU

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U1281 Code

1. What are common symptoms of OBDII code U1281 (Lost Communication With MICU)?

- Common symptoms include issues with the vehicle's power windows, interior lights, and other electrical components controlled by the MICU.

2. What does the OBDII code U1281 indicate?

- The code U1281 indicates a communication error between the vehicle's main body control module (MICU) and the diagnostic system.

3. What are possible causes of OBDII code U1281?

- Possible causes include a faulty MICU, poor electrical connections, damaged wiring, or a malfunctioning diagnostic tool.

4. How can I diagnose the cause of code U1281?

- Diagnose by checking the wiring connections to the MICU, performing a visual inspection for damaged wires, and using a diagnostic tool to communicate with the MICU.

5. Can a DIY enthusiast repair OBDII code U1281?

- DIY repair may be possible if the issue is a loose connection or damaged wire. However, complex issues with the MICU may require professional diagnosis and repair.

6. Is it safe to continue driving with code U1281 present?

- It is generally safe to drive with this code, but it is recommended to address the underlying issue promptly to prevent further electrical problems.

7. How much does it typically cost to repair code U1281?

- The cost of repair can vary depending on the underlying cause. Simple fixes like re-connecting wires may be inexpensive, while replacing a faulty MICU can be more costly.

8. Can resetting the OBDII system clear code U1281?

- Resetting the system may temporarily clear the code, but it will likely reappear if the underlying issue is not resolved.

9. Are there any preventive measures to avoid OBDII code U1281?

- Regular inspections of the vehicle's electrical system, ensuring proper wiring connections, and addressing any issues promptly can help prevent code U1281 from occurring.

10. How long does it take to repair OBDII code U1281?

- The repair time can vary depending on the cause of the issue. Simple fixes may take a short time, while more complex repairs may require more extensive troubleshooting and labor.