Engine-Codes - Generic - B278C

B278C Code - Lost Communication With Power Source Control

- Code Popularity: 2,230 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the Code B278C?

  • Faulty Power Management Control ECU
  • Power Management Control ECU harness is open or shorted
  • Power Management Control ECU circuit poor electrical connection
  • Faulty Certification ECU (Smart Key ECU Assembly)

|How to Fix the B278C Code?

Start by checking 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.

|What is the Cost to Diagnose the Code B278C?

Labor: 1.0

The cost to diagnose the B278C code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

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|What are Code B278C Possible Symptoms?

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

|What Does the B278C Code Mean?

This Diagnostic Trouble Code (DTC) is stored when Local Interconnect Network (LIN) communication between the Certification ECU (Smart Key ECU Assembly) and Power Management Control ECU stops for 10 seconds or more.

Lost Communication With Power Source Control

|Need more Information on the B278C Code?

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|Code B278C Information for Specific Makes

|Need Help with the B278C Code?

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