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AutoCodes - Generic - B278B

B278B Code - Electric Compressor High Voltage

- Code Popularity: 571 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B278B?

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 Electric Compressor
  • Electric Compressor harness is open or shorted
  • Electric Compressor circuit poor electrical connection
  • Faulty Li-ion Battery
  • Faulty Power Delivery Module (PDM)
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How to Fix the DTC B278B?

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

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B278B code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code B278B Description

The Diagnostic Trouble Code (DTC) sets when the high voltage system input voltage is more than 420 V.

OBDII Code B278B - Electric Compressor High Voltage - AutoCodes.com
B278B Code - Electric Compressor High Voltage

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Code B278B comments

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