Engine-Codes - Acura - B1278 ACURA

B1278 ACURA - Headlight Switch ON Position Circuit Malfunction

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

B1278 ACURA Possible Causes

  • Faulty Combination Headlight Switch
  • Combination Headlight Switch harness is open or shorted
  • Combination Headlight Switch circuit poor electrical connection
  • Faulty Multiplex Integrated Control Unit (MICU)

How do I fix code B1278 ACURA?

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 B1278 ACURA code

Labor: 1.0

The cost of diagnosing the B1278 ACURA code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

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

B1278 ACURA Meaning

The Multiplex Integrated Control Unit (MICU) monitors the Headlight Switch Position. The MICU sets the OBDII code when the Headlight Switch Position is not to factory specifications.

B1278 ACURA More Information

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