Engine-Codes - Generic - U1291

U1291 Code - MICU Lost Communication With Relay Control Module

- Code Popularity: 933 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC U1291?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Relay Control Module
  • Relay Control Module harness is open or shorted
  • Relay Control Module circuit poor electrical connection
  • Faulty Rear Multiplex Integrated Control Unit (MICU)
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How to Fix the DTC U1291?

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 pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the U1291 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the U1291 Code Mean?

The Diagnostic Trouble Code (DTC) sets when a communication malfunction was detected between the Relay Control Module and the Rear Multiplex Integrated Control Unit (MICU).

U1291 Code - MICU Lost Communication With Relay Control Module

Need more Information on the Code?

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Code U1291 Information for Specific Makes

  • U1291 Acura MICU Lost Communication With Relay Control Module
  • U1291 Honda MICU Lost Communication With Relay Control Module

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